2 Samuel 20:18

Then she spoke, saying, “Formerly they used to say, ‘They will surely ask advice at Abel,’ and thus they ended the dispute.

Deuteronomy 20:10-11

“When you approach a city to fight against it, you shall offer it terms of peace.

Treasury of Scripture Knowledge

Summary

Then she spake, saying, They were wont to speak in old time, saying, They shall surely ask counsel at Abel: and so they ended the matter.

They were wont, etc

Bible References

They were wont, etc

Deuteronomy 20:10
“When you approach a city to fight against it, you shall offer it terms of peace.