יָשׁ֣וּב עֲמָל֣וֹ בְרֹאשׁ֑וֹ וְעַ֥ל קָ֝דְקֳד֗וֹ חֲמָס֥וֹ יֵרֵֽד׃
Eu louvarei ao SENHOR segundo a sua justiça, e cantarei louvores ao nome do SENHOR, o Altíssimo.
Radak on Psalms
His iniquity shall return on his own head: – The treachery he has acted in his pursuit of me shall return on his own head,
Radak on Psalms
And his violence shall come down upon his own pate: – a repetition of the idea with a change of terms.