John 1:1-5: "1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 He was in the beginning with God. 3 All things were made through him, and without him was not any thing made that was made. 4 In him was life, and the life was the light of men. 5 The light shines in the darkness, and the darkness has not overcome it."
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."
2 Corinthians 4:6: "For God, who said, 'Let light shine out of darkness,' has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ."
John 14:6: "Jesus said to him [Thomas], 'I am the way, and the truth, and the life. No one comes to the Father except through me.'"
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The first verse comes from John 1:1-5. Both mention Jesus as a "light [that] shines in the darkness" (or simply "Brightness" in the hymn) and who was "in the beginning with God" ("Before the world knew day or night").
2 Corinthians 4:6 seems to be in the second verse. Again, there's an image of light ("O Jesus, very Light of Light, / Our constant star in sin's deep night"), and while this - like the first verse - could be from John 1:4-5, there's an additional element of guiding or direction, which also seems to be the case with 2 Corinthians 4:6.
The third verse comes from John 1:14, specifically "Your put our human vesture on / And came to us as Mary's son," and John 14:6 is in the fourth verse, specifically "Salvation comes from You alone."
2 Corinthians 4:6 seems to be in the second verse. Again, there's an image of light ("O Jesus, very Light of Light, / Our constant star in sin's deep night"), and while this - like the first verse - could be from John 1:4-5, there's an additional element of guiding or direction, which also seems to be the case with 2 Corinthians 4:6.
The third verse comes from John 1:14, specifically "Your put our human vesture on / And came to us as Mary's son," and John 14:6 is in the fourth verse, specifically "Salvation comes from You alone."