'Lust of the Flesh' in the Bible

but put ye on the Lord Jesus Christ, and make no provision for the lust of the flesh.

This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.

For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.