Charles Ellicott Commentary Psalms 68:1

"Let God arise, let his enemies be scattered; Let them also that hate him flee before him." — Psalms 68:1 (ASV)

Let God arise. —A reminiscence of the battlecry raised as the ark was advanced at the head of the tribes (Numbers 10:35). For interesting historical associations with this verse, see Gibbon (chapter 58), and Carlyle, Cromwell’s Letters and Speeches (Volume II, 185).