Amos 4:12

Therefore thus will I do unto thee, O Israel: and because I will do this unto thee, prepare to meet thy God, O Israel.

Therefore - as all chastizements have failed to make thee "return unto me."

Thus will I do unto thee - as I have threatened (Amos 4:2).

And because I will do this unto thee, prepare to meet thy God. God is about to inflict the last and worst judgment on thee, the extinction of thy nationality: consider then what preparation thou canst make for encountering Him as thy foe (; Luke 14:31). Since it would be madness to think of meeting in battle the King of kings (; ; ), see what can be done toward mitigating the severity of the coming judgment by penitence (; ). This latter exhortation is followed up in ; ; ; Amos 5:14.