Psalms 137:6

What we love, we love to think of. Those that rejoice in God, for his sake make Jerusalem their joy. They stedfastly resolved to keep up this affection. When suffering, we should recollect with godly sorrow our forfeited mercies, and our sins by which we lost them. If temporal advantages ever render a profession, the worst calamity has befallen him. Far be it from us to avenge ourselves; we will leave it to Him who has said, Vengeance is mine. Those that are glad at calamities, especially at the calamities of Jerusalem, shall not go unpunished. We cannot pray for promised success to the church of God without looking to, though we do not utter a prayer for, the ruin of her enemies. But let us call to mind to whose grace and finished salvation alone it is, that we have any hopes of being brought home to the heavenly Jerusalem.

If I do not remember thee, let my tongue cleave to the roof of my mouth. Thus the singers imprecate eternal silence upon their mouths if they forget Jerusalem to gratify Babylon. The players on instruments and the sweet songsters are of one mind: the enemies of the Lord will get no mirthful tune or song from them. If I prefer not Jerusalem above my chief joy. The sacred city must ever be first in their thoughts, the queen of their souls; they had sooner be dumb than dishonour her sacred hymns, and give occasion to the oppressor to ridicule her worship. If such the attachment of a banished Jew to his native land, how much more should we love the church of God of which we are children and citizens. How jealous should we be of her honour, how zealous for her prosperity. Never let us find jests in the words of Scripture, or make amusement out of holy things, lest we be guilty of forgetting the Lord and his cause. It is to be feared that many tongues have lost all power to charm the regations of the saints because they have forgotten the gospel, and God has forgotten them.