Psalms 57:2

I will cry unto God most high - The idea is - God is exalted above all creatures; all events are “under” him, and he can control them. The appeal was not to man, however exalted; not to an angel, however far he may be above man; it was an appeal made at once to the Supreme Being, the God to whom all worlds and all creatures are subject, and under whose protection, therefore, he must be safe.

Unto God that performeth all things for me - The word used here, and rendered “performeth” - גמר gâmar - means properly to bring to an end; to complete; to perfect. The idea here is, that it is the character of God, that he “completes” or “perfects,” or brings to a happy issue all his plans. The psalmist had had experience of that in the past. God had done this in former trials; he felt assured that God would do it in this; and he, therefore, came to God with a confident belief that all would be safe in his hands.