Who is this King of glory? - See the notes at Psalms 24:8.
The Lord of hosts, he is the King of glory - On the meaning of the phrase, “the Lord of hosts,” see the notes at Isaiah 1:9. The essential idea is, that God rules over the universe of worlds considered as marshalled in order, or arrayed as hosts or armies are for battle. All are under His command. The stars in the sky, that seem to be marshalled and led forth in such perfect and beautiful order - the inhabitants of heaven in their different orders and ranks - all these acknowledge Him, and submit to Him as the supreme God. In the close of the psalm, therefore, there is an exact accordance with the thought in the beginning, that God is the Sovereign Ruler of the universe, and that He should everywhere be recognized and regarded as such. The entrance of the ark of the covenant into the place provided for it as a permanent residence was a fit occasion to proclaim this thought; and this is proclaimed in the psalm in a manner befitting so solemn an occasion and so sublime a truth.