Albert Barnes Commentary Psalms 46:7

"Jehovah of hosts is with us; The God of Jacob is our refuge. Selah" — Psalms 46:7 (ASV)

The Lord of hosts – The God commanding, ordering, and marshalling the hosts of heaven – the angels and the starry worlds. See the notes at Isaiah 1:9. .

The reference here is to God considered as having control over all “armies,” or all that can be regarded and described as a marshalled host, on earth and in heaven. Having such a Being, therefore, for a protector, they had nothing to fear. See Psalms 46:11.

Is with us – He is on our side; He is our defender. The Hebrew phrase used here is employed in Isaiah 7:14 (notes) and Isaiah 8:8 (notes) to describe the Messiah. See the notes at those passages.

The God of Jacob – See the notes at Psalms 24:6. The meaning is, the God whom Jacob acknowledged, and whom he found to be his friend, is with us.

Is our refuge – Literally, a high place, as a tower, far above the reach of enemies. See Psalms 9:9 (note) and Psalms 18:2 (note). Thus, the margin reads, “an high place for us.”