Psalms 81:7

7Thou didst cry in trouble, and I delivered thee. Here the same subject is prosecuted. By their crying when they were in distress, I understand the prayers which they then offered to God. It sometimes happens that those who are reduced to extremity bewail their calamities with confused crying; but as this afflicted people still had in them some remains of godliness, and as they had not forgotten the promise made to their fathers, I have no doubt that they directed their prayers to God. Even men without religion, who never think of calling upon God, when they are under the pressure of any great calamity, are moved by a secret instinct of nature to have recourse to Him. This renders it the more probable that the promise was, as it were, a schoolmaster to the Israelites, leading them to look to God. As no man sincerely calls upon Him but he who trusts in him for help; this crying ought the more effectually to have convinced them that it was their duty to ascribe to Him alone the deliverance which was offered them. By the secret place of thunder some, in my opinion, with too much refinement of interpretation, understand that God by thundering rendered the groanings of the people inaudible to the Egyptians, that by hearing them the Egyptians might not become the more exasperated. But the meaning simply is, that the people were heard in a secret and wonderful manner, while, at the same time, manifest tokens were given by which the Israelites might be satisfied that they were succoured by the Divine hand. God, it is true, was not seen by them face to face; but the thunder was an evident indication of his secret presence among them. (410) To make them prize more highly this benefit, God upbraidingly tells them that they were unworthy of it, having given such a manifest proof at the waters of Meribah, (411) that they were of a wicked and perverse disposition, Exodus 17:7. Your wickedness, as if he had said, having at that time so openly shown itself, surely it must from this be incontrovertible that my favor to you did not proceed from any regard to your good desert. This rebuke is not less applicable to us than to the Israelites; for God not only heard our groanings when we were afflicted under the tyranny of Satan, but before we were born appointed his only begotten Son to be the price of our redemption; and afterwards, when we were his enemies, he called us to be partakers of his grace, illuminating our minds by his gospel and his Holy Spirit; while we, notwithstanding, continue to indulge in murmuring, yea, even proudly rebel against Him.