Psalms 81:7

All the worship we can render to the Lord is beneath his excellences, and our obligations to him, especially in our redemption from sin and wrath. What God had done on Israel's behalf, was kept in remembrance by public solemnities. To make a deliverance appear more gracious, more glorious, it is good to observe all that makes the trouble we are delivered from appear more grievous. We ought never to forget the base and ruinous drudgery to which Satan, our oppressor, brought us. But when, in distress of conscience, we are led to cry for deliverance, the Lord answers our prayers, and sets us at liberty. Convictions of sin, and trials by affliction, prove his regard to his people. If the Jews, on their solemn feast-days, were thus to call to mind their redemption out of Egypt, much more ought we, on the Christian sabbath, to call to mind a more glorious redemption, wrought out for us by our Lord Jesus Christ, from worse bondage.

Thou calledst in trouble, and I delivered thee. God heard his people's cries in Egypt, and at the Red Sea: this ought to have bound them to him. Since God does not forsake us in our need, we ought never to forsake him at any time. When our hearts wander from God, our answered prayers cry "shame" upon us. I answered thee in the secret place of thunder. Out of the cloud the Lord sent forth tempest upon the foes of his chosen. That cloud was his secret pavilion, within it he hung up his weapons of war, his javelins of lightning his trumpet of thunder; forth from that pavilion he came and overthrew the foe that his own elect might be secure. I proved thee at the waters of Meribah. They had proved him and found him faithful, he afterwards proved them in return. Precious things are tested, therefore Israel's loyalty to her King was put to trial, and, alas, it failed lamentably. The God who was adored one day for his goodness was reviled the next, when the people for a moment felt the pangs of hunger and thirst. The story of Israel is only our own history in another shape. God has heard us, delivered us, liberated us, and too often our unbelief makes the wretched return of mistrust, murmuring, and rebellion. Great is our sin; great is the mercy of our God: let us reflect upon both, and pause a while. Selah. Hurried reading is of little benefit; to sit down a while and meditate is very profitable.