Psalm 44:21
Shall not God search this out? for he knoweth the secrets of the heart.
Shall not God search this out?.... Undoubtedly he would, was it so, and expose it, and punish for it; as he will the Balaamites and children of Jezebel, Revelation 2:18; this seems to be an appeal to God for the truth of all that the church had said concerning her steadfastness and integrity under the most trying exercises;
for he knoweth the secrets of the heart; whether the heart is turned back, or there is any inclination to apostatize from God, or his name is forgotten in it; as well as whether in fact the hand has been stretched out, or prayer made to a strange god, Jeremiah 17:9.