John Gill Commentary Psalms 132:8

"Arise, O Jehovah, into thy resting-place; Thou, and the ark of thy strength." — Psalms 132:8 (ASV)

Arise, O Lord, into your rest
Which words, and what follow, were used by Solomon at the dedication of the temple; and with which he concluded his prayer, (2 Chronicles 6:41 2 Chronicles 6:42) ; and so may be a request to the Lord, that he would take up his residence in the temple built for him, where he would have a firm and stable place of rest; who, from the time of Israel's coming out of Egypt, has not dwelt in a house; but had walked in a tent or tabernacle from place to place, (2 Samuel 6:6) ; and that he would take up his abode in his church, the antitype of the temple, and rest in his love there, and cause his people to rest also; see (Psalms 132:13Psalms 132:14) ;

you, and the ark of your strength ;
the Targum is, ``you, and the ark in which is your law.'' This is sometimes called the strength of the Lord; because by it he showed his great strength in destroying the enemies of his people, the Philistines and others; see (Psalms 78:61) (105:4) . It was a type of Christ, who is the power of God, and the mighty God; and, as man, made strong by the Lord; and, as Mediator, has all strength in him for his people. And so the words may be considered as a request to him, either to arise and enter into his rest in heaven, having done his work of redemption and salvation here on earth, for which he became incarnate; or to grant his presence with his church, and take up his rest there, and give them spiritual peace and rest for their souls.