New Revised Standard Version
Nicodemus said to him, “How can anyone be born after having grown old? Can one enter a second time into the mother’s womb and be born?”

Contemporary English Version
Nicodemus asked, "How can a grown man ever be born a second time?"

New American Bible
Nicodemus said to him, “How can a person once grown old be born again? Surely he cannot reenter his mother’s womb and be born again, can he?”

Douay-Rheims Bible
Nicodemus saith 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 again?

Nicodemus saith 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 again?

How.

John 3:3 Jesus answered and said to him: Amen, amen, I say to thee, unless a man be born again, he cannot see the kingdom of God.

John 4:11,12 The woman saith to him: Sir, thou hast nothing wherein to draw, and the well is deep. From whence then hast thou living water? . . .

John 6:53,60 Then Jesus said to them: Amen, amen, I say unto you: except you eat the flesh of the Son of man and drink his blood, you shall not have life in you. . . .

1 Corinthians 1:18 For the word of the cross, to them indeed that perish, is foolishness: but to them that are saved, that is, to us, it is the power of God.

1 Corinthians 2:14 But the sensual man perceiveth not these things that are of the Spirit of God. For it is foolishness to him: and he cannot understand, because it is spiritually examined.