Charles Ellicott Commentary Psalms 57:2

"I will cry unto God Most High, Unto God that performeth [all things] for me." — Psalms 57:2 (ASV)

Peformeth all things for me. —Literally, completes for me, which may be explained from the analogy of Psalms 138:8. But as the Septuagint and Vulgate have “my benefactor” (reading gomçl for gomçr), we may adopt that emendation.