John Gill Commentary Amos 4:10

"I have sent among you the pestilence after the manner of Egypt: your young men have I slain with the sword, and have carried away your horses; and I have made the stench of your camp to come up even into your nostrils: yet have ye not returned unto me, saith Jehovah." — Amos 4:10 (ASV)

I have sent among you the pestilence, after the manner of
Egypt
Like that which was sent among the firstborn of Egypt, and cut them off in one night; or when in the way of Egypt, as the Targum; either as in the wilderness, when they came out of Egypt, so Jarchi interprets it; see (Numbers 16:46–49) ; or the Lord sent the pestilence as they went in the way to Egypt for help and assistence, or for shelter, for food in time of famine; for they went thither, as Kimchi says, because of the famine, to fetch food, from thence; and this was displeasing to the Lord, and he sent the plague among them, which cut them off in the way:

your young men have I slain with the sword ;
of the enemy in battle; or as they were in the way to Egypt, being sent there to fetch food, but were intercepted by the enemy:

and have taken away your horses ;
on which they rode to Egypt on the above errand; or rather which they brought up from thence, contrary to the command of God:

and have made the stink of your camps to come up unto your nostrils ;
such numbers of their armies being slain, and these lying unburied, the smell of them was very noisome:

yet have you not returned unto me saith the Lord ;
still they continued obstinate and impenitent; (See Gill on Amos 4:6).