2 David said, “I will show kindness to Hanun the son of Nahash, because his father showed kindness to me.” So David sent messengers to comfort him concerning his father. David’s servants came into the land of the children of Ammon to Hanun, to comfort him.
1 Chronicles 19:2 Cross References - WEB
Genesis 19:37-38
Deuteronomy 23:3-6
3 An Ammonite or a Moabite shall not enter into Yahweh’s assembly; even to the tenth generation shall no one belonging to them enter into Yahweh’s assembly forever,
4 because they didn’t meet you with bread and with water on the way when you came out of Egypt, and because they hired against you Balaam the son of Beor from Pethor of Mesopotamia, to curse you.
5 Nevertheless Yahweh your God wouldn’t listen to Balaam, but Yahweh your God turned the curse into a blessing to you, because Yahweh your God loved you.
6 You shall not seek their peace nor their prosperity all your days forever.
1 Samuel 30:26
26 When David came to Ziklag, he sent some of the plunder to the elders of Judah, even to his friends, saying, “Behold, a present for you from the plunder of Yahweh’s enemies.”
2 Samuel 9:1
1 David said, “Is there yet any who is left of Saul’s house, that I may show him kindness for Jonathan’s sake?”
2 Samuel 9:7
7 David said to him, “Don’t be afraid; for I will surely show you kindness for Jonathan your father’s sake, and will restore to you all the land of Saul your father. You will eat bread at my table continually.”
2 Kings 4:13
13 He said to him, “Say now to her, ‘Behold, you have cared for us with all this care. What is to be done for you? Would you like to be spoken for to the king, or to the captain of the army?’” She answered, “I dwell among my own people.”
Nehemiah 4:3
3 Now Tobiah the Ammonite was by him, and he said, “What they are building, if a fox climbed up it, he would break down their stone wall.”
Nehemiah 4:7
7 But when Sanballat, Tobiah, the Arabians, the Ammonites, and the Ashdodites heard that the repairing of the walls of Jerusalem went forward, and that the breaches began to be filled, they were very angry;
Nehemiah 13:1
1 On that day they read in the book of Moses in the hearing of the people; and it was found written in it that an Ammonite and a Moabite should not enter into the assembly of God forever,
Esther 6:3
3 The king said, “What honor and dignity has been given to Mordecai for this?” Then the king’s servants who attended him said, “Nothing has been done for him.”
Ecclesiastes 9:15
15 Now a poor wise man was found in it, and he by his wisdom delivered the city; yet no man remembered that same poor man.