Deuteronomy 2:19
And when thou comest nigh over against the children of Ammon, distress them not, nor meddle with them: for I will not give thee of the land of the children of Ammon any possession; because I have given it unto the children of Lot for a possession.
Cross-reference
Deuteronomy 2:5 gives a parallel command about Edom — do not meddle, their land given to Esau.
Deuteronomy 2:9 gives the same command regarding Moab — do not contend, land given to Lot's children.
Deuteronomy 2:37 summarizes Israel's obedience to this very command not to enter Ammon's territory.
Genesis 19:36-38 records the origin of Ammon and Moab, explaining why their land belongs to Lot's descendants.
In Judges 11:13-27, Jephthah cites this historical command to argue that Israel never took Ammon's land, showing the lasting impact of God's directive.
2 Chronicles 20:10 recalls that God forbade Israel from invading Ammon, citing this same command as the reason for their restraint.
Genesis 19:38 provides the origin of the Ammonites as children of Lot, directly explaining who the command protects.
Judges 11:15 explicitly states that Israel did not take the land of Ammon, echoing the command in Deuteronomy 2:19.
Jeremiah 49:1 condemns Ammon for taking Israel's land—contrasting with God's command here not to take Ammon's land.
Amos 1:13 condemns Ammon's cruelty in expanding borders—opposite of God's instruction here to leave Ammon alone.