John 1 v14-15 proclaims that the glorious Son of God took on human flesh to dwell among us - the miraculous reality in which Jesus was both fully God and fully man.

John 1:14–15

14 And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son¹ from the Father, full of grace and truth. 15 (John bore witness about him, and cried out, “This was he of whom I said, ‘He who comes after me ranks before me, because he was before me.’”)

Footnotes

[1] 1:14 Or only One, or unique One

(ESV)