Psalms 74:17 - Joseph Benson’s Commentary on the Old and New Testaments

Thou hast set all the borders of the earth Thou hast fixed the bounds, both of the habitable world in general, so that the seas, though they do encompass and assault them, yet are not, and never shall be, able to remove them, and of all the countries and people upon earth, whom thou hast confined within such bounds as thou hast seen fit. Thou hast made summer and winter As the former clause of the verse shows God's power and government over all places, so this displays his dominion over all times and seasons. And both together are fitly alleged as a motive to God, that he would, at this time, take care of his poor people, and restore them to their ancient land and borders, in which he had been pleased to set them.