John Gill Commentary Psalms 144:11

"Rescue me, and deliver me out of the hand of aliens, Whose mouth speaketh deceit, And whose right hand is a right hand of falsehood." — Psalms 144:11 (ASV)

Rid me, and deliver me from the hand of strange children
This is repeated from (Psalms 144:7Psalms 144:8); and is done to show the vehemency and importunity of the request, and the danger David was in, and his sense of it; (See Gill on Psalms 144:7); whose mouth speaks vanity, and their right hand [is] a right hand of
falsehood. (See Gill on Psalms 144:8).