Luke 2:4-16: "4 And Joseph also went up from Galilee, from the town of Nazareth, to Judea, to the city of David, which is called Bethlehem, because he was of the house and lineage of David, 5 to be registered with Mary, his betrothed, who was with child. 6 And while they were there, the time came for her to give birth. 7 And she gave birth to her firstborn son and wrapped him in swaddling cloths and laid him in a manger, because there was no place for them in the inn.
"8 And in the same region there were shepherds out in the field, keeping watch over their flock by night. 9 And an angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were filled with fear. 10 And the angel said to them, 'Fear not, for behold, I bring you good news of great joy that will be for all the people. 11 For unto you is born this day in the city of David a Savior, who is Christ the Lord. 12 And this will be a sign for you: you will find a baby wrapped in swaddling cloths and lying in a manger.' 13 And suddenly there was with the angels a multitude of the heavenly host praising God and saying, 14 'Glory to God in the highest, and on earth peace among those with whom he is pleased!'
"15 When the angels went away from them into heaven, the shepherds said to one another, 'Let us go over to Bethlehem and see this thing that has happened, which the Lord has made known to us.' 16 And they went with haste and found Mary and Joseph, and the baby lying in a manger."
John 1:14: "And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth."
Matthew 20:28: "'even as the Son of Man came not to be served but to serve, and to give his life as a ransom for many.'"
John 17:23: "'I in them and you in me, that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me.'"
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The Luke 2 text briefly shows up in the first verse, mostly just to set the scene: "O Jesus Christ, / Thy manger is / My paradise at which my soul reclineth." Immediately following this are the lines "For there, O Lord, / Doth lie the Word / Made flesh for us; herein Thy grace forth shineth," which is from John 1:14.
The second verse starts with the lines "He whom the sea / And wind obey," which could come from a number of Biblical sources, none of which are cited. Jesus calms storms in Matthew 8:23-27 (with parallel accounts in Mark 4:35-41 and Luke 8:22-25) and in John 6:16-21 (where he also walks on water). Since the hymn is talking about Jesus specifically, one of those two is probably the main referent, but calming the raging sea also shows up in the Psalms: 65:7, 89:9, and 107:29. The second verse continues with "Doth come to serve the sinner in great meekness," which is from Matthew 20:28. The next two lines are from John 17:23: "Thou, God's own Son, / With us art one," although equally applicable is Matthew 1:23, which quotes Isaiah 7:14: "'Behold, the virgin shall conceive and bear a son, and they shall call his name Immanuel' (which means, God with us)." The name Immanuel is also mentioned in the hymn's third verse.
