2 Samuel 20:18

Then she spoke, saying, They used to speak in old times, saying, If you have a question ask it at Abel; and so they concluded the matter.

Deuteronomy 20:10-11

When thou comest near to a city to fight against it, then proclaim peace unto it.

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 thou comest near to a city to fight against it, then proclaim peace unto it.