Adjured them; or, made them to swear; caused the people, or some in the name of all, to swear for the present and succeeding generations, and to confirm their oath by a curse. Before the Lord, i.e. from God's presence, and by his sentence, as they are said to east lots before the Lord, Joshua 18:8,10, i.e. expecting the decision from God. He intimates, that he doth not utter this in a passion, or upon a particular dislike of that place, but by Divine inspiration, as appears from 1 Kings 16:34. God would have the ruins of this city remain as a standing monument of God's justice against this wicked and idolatrous people, and of his almighty power in destroying so great and strong a city by such contemptible means. That riseth up and buildeth, i.e. that shall attempt or endeavour to build it. So this curse is restrained to the builder, but no way belongs to those who should inhabit it after it was built, as is evident from 2 Kings 2:18 Luke 19:1,5. The builder shall lose all his children in the work, the first at the beginning, others in the progress of it by degrees, and the youngest in the close of it, when the gates use to be set up. This was fulfilled, 1 Kings 16:34.
Related Commentaries of Joshua 6:26
Joshua 6:26
26 And Joshua adjured them at that time, saying, Cursed be the man before the LORD, that riseth up and buildeth this city Jericho: he shall lay the foundation thereof in his firstborn, and in his youngest son shall he set up the gates of it.