Deuteronomy 20:19

KJV_Strongs(i)
  19 H6696 When thou shalt besiege [H8799]   H5892 a city H7227 a long H3117 time H3898 , in making war [H8736]   H8610 against it to take [H8800]   H7843 it, thou shalt not destroy [H8686]   H6086 the trees H5080 thereof by forcing [H8800]   H1631 an axe H398 against them: for thou mayest eat [H8799]   H3772 of them, and thou shalt not cut them down [H8799]   H6086 (for the tree H7704 of the field H120 is man's H935 life) to employ [H8800]   H6440 them in the siege H4692  :