'Border' in the Bible

Thus saith Jehovah: For three transgressions of the children of Ammon, yea, for four, I will not turn away the punishment thereof; because they have ripped up the women with child of Gilead, that they may enlarge their border.

Pass ye unto Calneh, and see; and from thence go ye to Hamath the great; then go down to Gath of the Philistines: are they better than these kingdoms? or is their border greater than your border?