Psalms 68:28 - Matthew Poole's English Annotations on the Holy Bible

Having spoken of Israel, and of their several tribes, Psalms 68:26,27, he now directeth his speech to them. Hath commanded, i.e. hath ordained or effectually procured, as this word is oft used, as Leviticus 25:21 Deuteronomy 28:8 Psalms 42:8, Psalms 44:4. Thy strength; all that strength and power which thou hast put forth at any time in fighting with thine enemies, and which is now greatly increased by the re-collection and union of all the tribes under one head, which is the work of God himself, without whom all the differences and animosities which had for many years been among them could never have been composed and quieted. Seeing therefore all our strength is in thee and from thee alone, we pray unto thee for the continuance and increase of our strength, and that thou wouldst proceed to finish that good work which thou hast begun among us, by preserving, and confirming, and perpetuating this blessed union, and by giving us a more full and universal deliverance from our enemies.