1. Or from above; the Greek is purposely ambiguous and can mean both again and from above; also verse 7
 he cannot see the kingdom of God.” (Joh 1:13; Joh 3:36; 2Co 5:17; Ga 6:15; 1Pe 1:3; 1Pe 1:23)4Nicodemus 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?”5Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God. (Eze 36:25; Mr 16:16; Ac 2:38; Eph 5:26; Tit 3:5; Heb 10:22)6That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.
 blows where it wishes, and you hear its sound, but you do not know where it comes from or where it goes. So it is with everyone who is born of the Spirit.” (Ec 11:5; Eze 37:9; 1Co 12:11)9Nicodemus said to him, “How can these things be?” (Joh 6:52; Joh 6:60)10Jesus answered him, “Are you the teacher of Israel and yet you do not understand these things? (Joh 9:30)11Truly, truly, I say to you, we speak of what we know, and bear witness to what we have seen, but you
1. The Greek for you is plural here; also four times in verse 12
 do not receive our testimony. (Joh 3:32)12If I have told you earthly things and you do not believe, how can you believe if I tell you heavenly things?13No one has ascended into heaven except he who descended from heaven, the Son of Man.
22After this Jesus and his disciples went into the Judean countryside, and he remained there with them and was baptizing. (Joh 3:26; Joh 4:1)23John also was baptizing at Aenon near Salim, because water was plentiful there, and people were coming and being baptized24(for John had not yet been put in prison). (Mt 4:12; Joh 5:35)25Now a discussion arose between some of John’s disciples and a Jew over purification. (Joh 2:6)26And they came to John and said to him, “Rabbi, he who was with you across the Jordan, to whom you bore witness—look, he is baptizing, and all are going to him.” (Joh 1:7; Joh 3:2; Joh 12:19)27John answered, “A person cannot receive even one thing unless it is given him from heaven. (Mt 21:25; Joh 6:65; 1Co 4:7; Heb 5:4; Jas 1:17)28You yourselves bear me witness, that I said, ‘I am not the Christ, but I have been sent before him.’ (Mal 3:1; Mr 1:2; Lu 1:17; Joh 1:20; Ac 19:4)29The one who has the bride is the bridegroom. The friend of the bridegroom, who stands and hears him, rejoices greatly at the bridegroom’s voice. Therefore this joy of mine is now complete. (Jud 14:20; So 5:1; Mt 9:15; Mt 25:1)30He must increase, but I must decrease.”
1. Some interpreters hold that the quotation continues through verse 36