"_Herb yielding seed after his kind, and the tree yielding fruit . . . after his kind_."--Gen. i: 12.
"_Do men gather grapes of thorns, or figs of thistles?_"--Matt. vii: 16.
"_For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live_." --Romans viii: 13.