Commentary for Zephaniah 2:8

who taunted My people When [the people of] Israel were being led into exile toward the land of the Chaldeans, and they were passing through Ammon and Moab, and they would see Israel weeping, sighing, and crying out, they would taunt them and say, “Why are you suffering? Aren’t you going to your father’s house? Your fathers dwelt on the other side of the river from earliest times.” (Josh. 24:2)

and they aggrandized themselves on their border And they acted haughtily on their border.