John Gill Commentary Jeremiah 48:25

"The horn of Moab is cut off, and his arm is broken, saith Jehovah." — Jeremiah 48:25 (ASV)

The horn of Moab is cut off

The kingdom of Moab, high and strong, his power and strength, by which he defended himself, and offended others, as a beast with his horns; his powerful kingdom, and the glory of it.

and his arm is broken, says the Lord

So that he cannot hold a sword, or manage any weapon of war against the enemy, or do anything to annoy him, or in his own defence.

The Targum is, "the kingdom of Moab is cut off, and their rulers are broken, says the Lord;" and so Ben Melech interprets it of his princes, and his armies, which were the arm of the king, and of the people.