1 Samuel 26:21 records Saul's confession that David spared his life — the immediate context of David's statement here.

Psalm 18:25 states the reciprocal principle: with the merciful you show yourself merciful. David's sparing Saul exemplifies this.

Psalm 18:48 thanks God for delivering David from enemies, showing the answer to David's prayer for deliverance.

Psalm 34:17 promises that the righteous cry for help brings deliverance from troubles, affirming David's prayer.

Matthew 5:7 promises mercy to the merciful, directly mirroring David's act of sparing Saul and his prayer for mercy.

Matthew 7:2 pronounces the measure-for-measure judgment, exactly the same reciprocity David appeals to.

2 Samuel 22:1 introduces David's song of deliverance from Saul and all enemies — the fulfillment of his prayer for deliverance.

2 Kings 1:14 uses the identical phrase 'let my life be precious in your sight' — a verbal parallel from a different story.

Psalm 7:4 echoes David's claim of innocence—he did not repay evil to his friend—directly paralleling his sparing of Saul.