Thus says Yahweh: "For three transgressions of the children of Ammon, yes, for four, I will not turn away its punishment; Because they have ripped open the pregnant women of Gilead, That they may enlarge their border.
Now He doesn't name three indictments towards each. "For three transgressions, and for four" is a figure of speech that's just declaring a cup of God's indignation is full and is going to overflow now in judgment against Damascus. Damascus is the first, the capital of Syria.