The prophesy of Jeremiah saw that there would be a new covenant/treaty made between God and His followers.
Jeremiah 31:31-34 English Standard Version (ESV)
The New Covenant
31 “Behold, the days are coming, declares the Lord, when I will make a new covenant with the house of Israel and the house of Judah, 32 not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt, my covenant that they broke, though I was their husband, declares the Lord. 33 For this is the covenant that I will make with the house of Israel after those days, declares the Lord: I will put my law within them, and I will write it on their hearts. And I will be their God, and they shall be my people. 34 And no longer shall each one teach his neighbor and each his brother, saying, ‘Know the Lord,’ for they shall all know me, from the least of them to the greatest, declares the Lord. For I will forgive their iniquity, and I will remember their sin no more.”
Jesus Institutes the Lord’s Supper
14 When the hour had come, He sat down, and the [b
]twelve apostles with Him. 15 Then He said to them, “With fervent
desire I have desired to eat this Passover with you before I suffer; 16 for I say to you, I will no longer eat of it until it is fulfilled in the kingdom of God.”
17 Then He took the cup, and gave thanks, and said, “Take this and divide it
among yourselves; 18 for I say to you, [c
]I will not drink of the fruit of the vine until the kingdom of God comes.”
19 And He took bread, gave thanks and broke it,
and gave it
to them, saying, “This is My body which is given for you; do this in remembrance of Me.”
20 Likewise He also took
the cup after supper, saying, “This cup is
the new covenant in My blood, which is shed for you. 21 But behold, the hand of My betrayer is
with Me on the table. 22 And truly the Son of Man goes as it has been determined, but woe to that man by whom He is betrayed!”
23 Then they began to question among themselves, which of them it was who would do this thing.
John 7 New King James Version (NKJV)
Jesus’ Brothers Disbelieve
7 After these things Jesus walked in Galilee; for He did not want to walk in Judea, because the [a
]Jews sought to kill Him. 2 Now the Jews’ Feast of Tabernacles was at hand. 3 His brothers therefore said to Him, “Depart from here and go into Judea, that Your disciples also may see the works that You are doing. 4 For no one does anything in secret while he himself seeks to be known openly. If You do these things, show Yourself to the world.” 5 For even His brothers did not believe in Him.
6 Then Jesus said to them, “My time has not yet come, but your time is always ready. 7 The world cannot hate you, but it hates Me because I testify of it that its works are evil. 8 You go up to this feast. I am not [b
]yet going up to this feast, for My time has not yet fully come.” 9 When He had said these things to them, He remained in Galilee.
The Heavenly Scholar
10 But when His brothers had gone up, then He also went up to the feast, not openly, but as it were in secret. 11 Then the Jews sought Him at the feast, and said, “Where is He?” 12 And there was much complaining among the people concerning Him. Some said, “He is good”; others said, “No, on the contrary, He deceives the people.” 13 However, no one spoke openly of Him for fear of the Jews.
14 Now about the middle of the feast Jesus went up into the temple and taught. 15 And the Jews marveled, saying, “How does this Man know letters, having never studied?”
]Jesus answered them and said, “My doctrine is not Mine, but His who sent Me. 17 If anyone wills to do His will, he shall know concerning the doctrine, whether it is from God or whether
I speak on My own authority.
18 He who speaks from himself seeks his own glory; but He who seeks the glory of the One who sent Him is true, and no unrighteousness is in Him. 19 Did not Moses give you the law, yet none of you keeps the law? Why do you seek to kill Me?”
20 The people answered and said, “You have a demon. Who is seeking to kill You?”
21 Jesus answered and said to them, “I did one work, and you all marvel. 22 Moses therefore gave you circumcision (not that it is from Moses, but from the fathers), and you circumcise a man on the Sabbath. 23 If a man receives circumcision on the Sabbath, so that the law of Moses should not be broken, are you angry with Me because I made a man completely well on the Sabbath? 24 Do not judge according to appearance, but judge with righteous judgment.”
Could This Be the Christ?
25 Now some of them from Jerusalem said, “Is this not He whom they seek to kill? 26 But look! He speaks boldly, and they say nothing to Him. Do the rulers know indeed that this is [d
]truly the Christ? 27 However, we know where this Man is from; but when the Christ comes, no one knows where He is from.”
28 Then Jesus cried out, as He taught in the temple, saying, “You both know Me, and you know where I am from; and I have not come of Myself, but He who sent Me is true, whom you do not know. 29 [e
]But I know Him, for I am from Him, and He sent Me.”
30 Therefore they sought to take Him; but no one laid a hand on Him, because His hour had not yet come. 31 And many of the people believed in Him, and said, “When the Christ comes, will He do more signs than these which this Man
Jesus and the Religious Leaders
32 The Pharisees heard the crowd murmuring these things concerning Him, and the Pharisees and the chief priests sent officers to take Him. 33 Then Jesus said [f
]to them, “I shall be with you a little while longer, and then
I go to Him who sent Me. 34 You will seek Me and not find Me,
and where I am you cannot come.”
35 Then the Jews said among themselves, “Where does He intend to go that we shall not find Him? Does He intend to go to the Dispersion among the Greeks and teach the Greeks? 36 What is this thing that He said, ‘You will seek Me and not find Me, and where I am you cannot come’?”
The Promise of the Holy Spirit
37 On the last day, that great day
of the feast, Jesus stood and cried out, saying, “If anyone thirsts, let him come to Me and drink. 38 He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water.” 39 But this He spoke concerning the Spirit, whom those [g
]believing in Him would receive; for the [h
]Holy Spirit was not yet given,
because Jesus was not yet glorified.
Who Is He?
40 Therefore [i
]many from the crowd, when they heard this saying, said, “Truly this is the Prophet.” 41 Others said, “This is the Christ.”
John 13 English Standard Version (ESV)
Jesus Washes the Disciples' Feet
13 Now before the Feast of the Passover, when Jesus knew that his hour had come to depart out of this world to the Father, having loved his own who were in the world, he loved them to the end. 2 During supper, when the devil had already put it into the heart of Judas Iscariot, Simon's son, to betray him, 3 Jesus, knowing that the Father had given all things into his hands, and that he had come from God and was going back to God, 4 rose from supper. He laid aside his outer garments, and taking a towel, tied it around his waist. 5 Then he poured water into a basin and began to wash the disciples' feet and to wipe them with the towel that was wrapped around him. 6 He came to Simon Peter, who said to him, “Lord, do you wash my feet?” 7 Jesus answered him, “What I am doing you do not understand now, but afterward you will understand.” 8 Peter said to him, “You shall never wash my feet.” Jesus answered him, “If I do not wash you, you have no share with me.” 9 Simon Peter said to him, “Lord, not my feet only but also my hands and my head!” 10 Jesus said to him, “The one who has bathed does not need to wash, except for his feet,[a
] but is completely clean. And you[b
] are clean, but not every one of you.” 11 For he knew who was to betray him; that was why he said, “Not all of you are clean.”
12 When he had washed their feet and put on his outer garments and resumed his place, he said to them, “Do you understand what I have done to you? 13 You call me Teacher and Lord, and you are right, for so I am. 14 If I then, your Lord and Teacher, have washed your feet, you also ought to wash one another's feet. 15 For I have given you an example, that you also should do just as I have done to you. 16 Truly, truly, I say to you, a servant[c
] is not greater than his master, nor is a messenger greater than the one who sent him. 17 If you know these things, blessed are you if you do them. 18 I am not speaking of all of you; I know whom I have chosen. But the Scripture will be fulfilled,[d
] ‘He who ate my bread has lifted his heel against me.’ 19 I am telling you this now, before it takes place, that when it does take place you may believe that I am he. 20 Truly, truly, I say to you, whoever receives the one I send receives me, and whoever receives me receives the one who sent me.”
A New Commandment
31 When he had gone out, Jesus said, “Now is the Son of Man glorified, and God is glorified in him. 32 If God is glorified in him, God will also glorify him in himself, and glorify him at once. 33 Little children, yet a little while I am with you. You will seek me, and just as I said to the Jews, so now I also say to you, ‘Where I am going you cannot come.’ 34 A new commandment I give to you, that you love one another: just as I have loved you, you also are to love one another. 35 By this all people will know that you are my disciples, if you have love for one another.”
John 14 New King James Version (NKJV)
The Way, the Truth, and the Life
14 “Let not your heart be troubled; you believe in God, believe also in Me. 2 In My Father’s house are many [a
]mansions; if it were
]I would have told you. I go to prepare a place for you. 3 And if I go and prepare a place for you, I will come again and receive you to Myself; that where I am, there
you may be also. 4 And where I go you know, and the way you know.”
5 Thomas said to Him, “Lord, we do not know where You are going, and how can we know the way?”
6 Jesus said to him, “I am the way, the truth, and the life. No one comes to the Father except through Me.
The Father Revealed
7 “If you had known Me, you would have known My Father also; and from now on you know Him and have seen Him.”
8 Philip said to Him, “Lord, show us the Father, and it is sufficient for us.”
9 Jesus said to him, “Have I been with you so long, and yet you have not known Me, Philip? He who has seen Me has seen the Father; so how can you say, ‘Show us the Father’? 10 Do you not believe that I am in the Father, and the Father in Me? The words that I speak to you I do not speak on My own authority;
but the Father who dwells in Me does the works. 11 Believe Me that I am
in the Father and the Father in Me, or else believe Me for the sake of the works themselves.
The Answered Prayer
12 “Most assuredly, I say to you, he who believes in Me, the works that I do he will do also; and greater works
than these he will do, because I go to My Father. 13 And whatever you ask in My name, that I will do, that the Father may be glorified in the Son. 14 If you [c
]ask anything in My name, I will do it.
Jesus Promises Another Helper
15 “If you love Me, [d
]keep My commandments. 16 And I will pray the Father, and He will give you another [e
]Helper, that He may abide with you forever— 17 the Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you. 18 I will not leave you orphans; I will come to you.
Indwelling of the Father and the Son
19 “A little while longer and the world will see Me no more, but you will see Me. Because I live, you will live also. 20 At that day you will know that I am
in My Father, and you in Me, and I in you. 21 He who has My commandments and keeps them, it is he who loves Me. And he who loves Me will be loved by My Father, and I will love him and [f
]manifest Myself to him.”
22 Judas (not Iscariot) said to Him, “Lord, how is it that You will manifest Yourself to us, and not to the world?”
23 Jesus answered and said to him, “If anyone loves Me, he will keep My word; and My Father will love him, and We will come to him and make Our home with him. 24 He who does not love Me does not keep My words; and the word which you hear is not Mine but the Father’s who sent Me.