Charles H. Spurgeon on Psalms 66:3

Thine enemies shall submit themselves unto thee. In this, our first consideration is, that God himself hath enemies; and then, how should we hope to be, nay, why should we wish to be, without them. God had good, that is, glory from his enemies; and we may have good, that is, advantage in the way to glory, by the exercise of our patience, from enemies too. Those for whom God had done most, the angels, turned enemies first; vex not thou thyself, if those whom thou hast loved best hate thee deadliest... God himself hath enemies. Thine enemies shall submit, says the text, to God; there thou hast one comfort, though thou have enemies too; but the greater comfort is, that God calls thine enemies his. Nolite tangere Christus meos (Ps 105:15), says God of all holy people; you were as good touch me, as touch any of them, for, "they are the apple of mine eye" (Ps 17:8). Our Saviour Christ never expostulated for himself; never said, Why scourge you me? why spit you upon me? why crucify you me? As long as their rage determined in his person, he opened not his mouth; when Saul extended the violence to the church, to his servants, then Christ came to that, "Saul, Saul, why persecutest thou me?" ...Here is a holy league, defensive and offensive; God shall not only protect us from others, but he shall fight for us against them; our enemies are his enemies. Condensed from John Donne.