Send thine hand from above; rid me, and deliver me out of great waters, from the hand of strange children;
Send (extend) thine hand from above; rid me, and deliver me out of great waters - (Psalms 18:16.) The Hebrew for "rid me" х paatsah (H6475)] is literally to burst open; so to free one confined. This is a rare usage, and adopted to harmonize with the elevated poetic style of the psalm.
From the hand of strange children - `the sons of the stranger' (Psalms 18:44-45; Psalms 54:3); aliens in blood and in religion; enemies of God and of Israel.