Psalms 149:8

“To bind their kings with chains, and their nobles with fetters of iron.] Which is thought to allude to what was done to the Canaanitish kings, in the times of Joshua; and to the princes of Midian by Gideon; and to Agag by Saul; and to the Ammonites, Syrians, and others, by David: but it refers either to the first times of the Gospel, and the influence of the sword of the Spirit over the hearts of men; and on some very great personages, as kings and nobles, brought to Christ and his churches, in chains of powerful and efficacious grace, declaring a ready and cheerful subjection to his Gospel and ordinances; such as Constantine, Theodosius, and others; and who were instruments in subduing,…”

“To bind their kings with chains - To make them prisoners and captives. This is but carrying out the idea in the previous verses, of inflicting punishment upon them for the wrongs which they had done to the people of God. There is no evidence that this refers to a spiritual conquest, or to a spiritual subjection of those nations to the true religion. The whole idea is in accordance with what is so often expressed in the Psalms - that of inflicting just punishment on the wicked. See the General Introduction, Section 6. And their nobles with fetters of iron - To make them prisoners. That is, to subdue them. Captives in war, even those of elevated rank, were often led in chains to grace the…”

“Jos 10:23, Jos 10:24, Jos 12:7; Jdg 1:6, Jdg 1:7 Psalms 149:9”