New King James Version (NKJV)
John 2
21 But He was speaking of the temple of His body.
22 Therefore, when He had risen from the dead, His disciples remembered that He had said this to them; and they believed the Scripture and the word which Jesus had said.
23 Now when He was in Jerusalem at the Passover, during the feast, many believed in His name when they saw the signs which He did.
24 But Jesus did not commit Himself to them, because He knew all men,
25 and had no need that anyone should testify of man, for He knew what was in man.
John 3
1 There was a man of the Pharisees named Nicodemus, a ruler of the Jews.
2 This man came to Jesus by night and said to Him, "Rabbi, we know that You are a teacher come from God; for no one can do these signs that You do unless God is with him."
3 Jesus answered and said to him, "Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God."
4 Nicodemus said to Him, "How can a man be born when he is old? Can he enter a second time into his mother’s womb and be born?"
5 Jesus answered, "Most assuredly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
6 That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.