But you may destroy the trees that you know do not produce fruit. Use them to build siege works against the city that is waging war against you, until it falls.

Deuteronomy 20:19
When you lay siege to a city for an extended time while fighting against it to capture it, you must not destroy its trees by putting an axe to them, because you can eat their fruit. You must not cut them down. Are the trees of the field human, that you should besiege them?

Deuteronomy 21:1
If one is found slain, lying in a field in the land that the LORD your God is giving you to possess, and it is not known who killed him,

Ecclesiastes 9:14
There was a small city with few men. A mighty king came against it, surrounded it, and built large siege ramps against it.

Jeremiah 6:6
For this is what the LORD of Hosts says: "Cut down the trees and raise a siege ramp against Jerusalem. This city must be punished; there is nothing but oppression in her midst.

Only the trees which you know that they be not trees for meat, you shall destroy and cut them down; and you shall build bulwarks against the city that makes war with you, until it be subdued.