'Feet' in the Bible

Now the eye is not able to say to the hand, "I do not have need of you," or again, the head to the feet, "I do not have need of you."

For it is necessary for him to reign until he has put all his enemies under his feet.

For "he subjected all [things] under his feet." But when it says "all [things]" are subjected, [it is] clear that the one who subjected all [things] to him [is] not included.