Psalm 5:8: "Lead me, O LORD, in your righteousness because of my enemies; make your way straight before me."
Psalm 25:5: "Lead me in your truth and teach me, for you are the God of my salvation; for you I wait all the day long."
+++
The "lead me"s in both cited verses occur throughout the hymn, particularly in the refrain. Psalm 5:8 also appears at the beginning of the second verse ("Help me tread in the paths of righteousness").