*Minor differences ignored. Grouped by changes, with first version listed as example.
Shall not God search this out? We have here a solemn and emphatic protestation, in which the people of God dare to appeal to him as the judge of their integrity and uprightness. From this it appears, that they did not plead their cause openly before men, but communed with themselves as if they had been before the judgment-seat of God; and moreover, as a token of still greater confidence, they add, that nothing is hidden from God. Why is it that hypocrites often call God to witness, if it is not because they imagine that, by concealing their wickedness under some specious disguise, they have escaped the judgment of God? and thus they would represent the character of God to be different from what it is, as if by their deceptions they could dazzle his eyes. Whenever, therefore, we come before God, let us at the same time remember, that there is nothing to be gained by any vain pretense in his presence, inasmuch as he knows the heart.
Shall not God search this out? - That is, If this had been the case, it would be known to God. If, as a nation, we had been given to idolatry, or if our hearts had been secretly alienated from the true God, though there had been no open manifestation of apostasy, yet that could not have been concealed from him. The question here asked implies a solemn declaration on the part of the psalmist that this was not so; or that there was no such national apostasy from God, and no such prevalence of idolatry in the land as to account for what had occurred. The reason for the calamities which had come upon them, therefore, must be found in something else.
For he knoweth the secrets of the heart - What is in the heart: what is concealed from the world. If there were any such alienation from him in the hearts of the people, he would know it. The fact that God knows the heart, or that he understands all the secret thoughts, purposes, and motives of people, is one that is everywhere affirmed in the Scriptures. See 1-Chronicles 28:9; Romans 8:27; compare the notes at Revelation 2:23.
Shall not God search this out? - We confidently appeal to the true Good, the searcher of hearts, for the truth of this statement.
Shall not God (q) search this out? for he knoweth the secrets of the heart.
(q) They take God to witness that they were upright toward him.
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.
*More commentary available at chapter level.