Deuteronomy 20:19-20

19When thou shalt besiegeH6696 a cityH5892 a longH7227 timeH3117, in making warH3898 against it to takeH8610 it, thou shalt not destroyH7843 the treesH6086 of it by forcingH5080 an axeH1631 against them: for thou mayest eatH398 of them, and thou shalt not cut them downH3772 (for the treeH6086 of the fieldH7704 is man’sH120 life ) to employH935 them in the siegeH6440H4692:12 20Only the treesH6086 which thou knowestH3045 that they are not treesH6086 for foodH3978, thou shalt destroyH7843 and cut them downH3772; and thou shalt buildH1129 bulwarksH4692 against the cityH5892 that makethH6213 warH4421 with thee, until it shall be subduedH3381.3