The ULB sets the lines in 49:1-11, 14-27, 29-33, 37-39 farther to the right on the page than the rest of the text because they are part of a long quotation.
Ammon is destroyed because it drove the people of the tribe of Gad from their homeland. This is in line with the promises of the covenant Yahweh made with Abraham to curse those who curse Abraham's descendants. (See: [[rc://en/tw/dict/bible/kt/promise]] and [[rc://en/tw/dict/bible/kt/covenant]] and [[rc://en/tw/dict/bible/kt/curse]])
There are many rhetorical questions in this chapter. The purpose of these rhetorical questions is to convict those Yahweh addresses. (See: [[rc://en/ta/man/translate/figs-rquestion]])