Jamieson, Fausset and Brown on Psalms 68:13

13. Some translate this, "When ye shall lie between the borders, ye shall," &c., comparing the peaceful rest in the borders or limits of the promised land to the proverbial beauty of a gentle dove. Others understand by the word rendered "pots," the smoked sides of caves, in which the Israelites took refuge from enemies in the times of the judges; or, taking the whole figuratively, the rows of stones on which cooking vessels were hung; and thus that a contrast is drawn between their former low and afflicted state and their succeeding prosperity. In either case, a state of quiet and peace is described by a beautiful figure.