Romans 12:1-2 King James Version (KJV)

12 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.

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.

Matthew 22:37-39 New English Translation (NET Bible)

37 Jesus[a] said to him, “‘Love[b] the Lord your God with all your heart, with all your soul, and with all your mind.’[c] 38 This is the first and greatest[d] commandment. 39 The second is like it: ‘Love your neighbor as yourself.’[e]

Matthew 22:40 King James Version (KJV)

40 On these two commandments hang all the law and the prophets.