Awake, why sleepest thou, O Lord?.... Not that sleep properly falls upon God: the Keeper of Israel neither slumbers nor sleeps; his eyes are always upon his people; he never withdraws them from them, and he watches over them night and day: but sometimes he seems and is thought to be asleep; as when wicked men flourish and triumph over the righteous, and go on in sin with impunity; when their judgment seems to linger, and their damnation to slumber, though it does not; and when the saints are under sore afflictions, and the Lord seems to disregard them, and does not appear for their deliverance; and when things are as when the disciples were in a storm, and Christ was asleep, to whom they said, "carest thou not that we perish?"
and the Lord may be said to awake, and it is what is here prayed for, when he stirs up himself and takes vengeance on his enemies, as he will before long on antichrist and his followers; and when he takes in hand the cause and judgment of his people, and pleads it thoroughly, and delivers them out of the hands of all their oppressors, and gives them the dominion and kingdom under the whole heaven; see Isa 2:9;arise; to revenge the blood of his people, and to have mercy on his Zion;cast [us] not off for ever; as he might seem to do, by suffering their enemies to triumph over them; but in reality he does not; much less with loathing and abhorrence, as the word used signifies, since his church is his Hephzibah, in whom he delights, Isa 62:4; and still less for ever, since his love to them is from everlasting to everlasting, and they shall be for ever with him; See Gill on "Ps 43:2".