the mind
Romans Chapter 12:1
I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.
Romans Chapter 12:2
And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
Philippians Chapter 2:5
Let this mind be in you, which was also in Christ Jesus: