The earth and all the inhabitants thereof are dissolved - The word rendered “dissolved” means properly to melt, to flow down; then, to melt away, to pine away, to perish. Isaiah 64:7; Job 30:22; Nahum 1:5; Psalms 107:26. Here it means that there was, as it were, a general breaking up of things; or that none of the institutions of the land seemed to have any stability. There seemed to be no government, but universal anarchy and confusion.
I bear up the pillars of it - Of the earth; of society. The earth here is compared with an edifice supported by pillars. Compare Judges 16:26; 1 Samuel 2:8; 1 Timothy 3:15. As applied to a prince or ruler, this means that the permanent structure of the state, the welfare of society, depended on his administration. If, according to the view of others, it is applied to God, the meaning is, that as he upholds the world, there cannot be permanent misrule; that amidst all the commotions of earth, and all that seemed to threaten ruin, his hand sustained all, and he would not allow things to proceed to permanent disorder. In the former case, the assertion would be true if a prince felt that he had power to support the government, and to restore order; in the latter case, it must be true, for God sustains the earth, and as he can check disorder when he shall judge it best to interpose, so he will not permit it ultimately to prevail.
Selah - A musical pause. See the notes at Psalms 3:2.