'Within' in the Bible

So put away all filth and evil excess and humbly welcome the message implanted within you, which is able to save your souls.

And the tongue is a fire. That world of iniquity, the tongue, is placed within us spotting and soiling our whole nature, and setting the whole round of our lives on fire, being itself set on fire by Gehenna.

What is the source of wars and fights among you? Don’t they come from the cravings that are at war within you?

Or do you think the scripture means nothing when it says, "The spirit that God caused to live within us has an envious yearning"?