John 8:12

Once more Jesus addressed them. "I am the light of the world," he said; "He who follows me shall not walk in the darkness, but he shall have the Light of life."

John 12:46

Like light am I come into the world, so that no one who believes in me may remain in darkness.

Ephesians 5:8

For you were once darkness, but are now in the Lord.

Ephesians 5:14

For this reason it is said, "Awake, thou sleeper! Arise from the dead; And Christ shall shine upon thee!"

Treasury of Scripture Knowledge

Summary

When his candle shined upon my head, and when by his light I walked through darkness;

Bible References

By his light

John 8:12
Once more Jesus addressed them. "I am the light of the world," he said; "He who follows me shall not walk in the darkness, but he shall have the Light of life."
John 12:46
Like light am I come into the world, so that no one who believes in me may remain in darkness.
Ephesians 5:8
For you were once darkness, but are now in the Lord.