2 Samuel 22:26
With the merciful thou wilt shew thyself merciful, and with the upright man thou wilt shew thyself upright.
Cross-reference
Matthew 5:7
Parallel
Matthew 5:7 promises mercy to the merciful—directly mirroring David's declaration that God shows mercy to the merciful.
James 2:13
Parallel
James 2:13 warns of mercyless judgment for the unmerciful—reinforcing the reciprocal mercy David celebrates.