When the morning stars sang together,.... Either all the stars in a literal sense; for though, strictly speaking, there is but one morning star, yet all may be called so, because early created in the morning of the world; and are all stars of light, shine till the morning; and it is observed by some, that the nearer the morning the brighter they shine: and these in their way sing the praises of God, and set forth the glory of his perfections, and occasion songs of praise in men; see Ps 148:3.
Or figuratively, either angels, as most interpret them, comparable to stars for their glory, purity, and light, for their constancy, permanency, and numbers: or good men, particularly ministers of the word, and angels of the churches; who are stars in Christ's right hand, Re 1:20; but the principal morning star is Christ himself, Re 22:16;and all the sons of God shouted for joy; which are usually understood of angels also, so the Targum; who are the sons of God, not by birth, as Christ, nor by adoption, as saints; but by creation, as Adam, Lu 3:38.