Psalm 109:12
Let there be none to extend mercy unto him: neither let there be any to favour his fatherless children.
Cross-reference
Luke 6:38
Contrast
Luke 6:38 promises blessing for generosity — the opposite of the psalmist's curse of receiving no kindness.
James 2:13
Parallel
James 2:13 states that the merciless receive no mercy — the same principle behind the psalmist's curse.
Isaiah 13:18
Parallel
Isaiah 13:18 describes Babylon's merciless destruction of children, paralleling the wish for no kindness to the fatherless.