Romans 6:17

6:17 But thanks be to God that though you were slaves to sin, you obeyed from the heart that pattern of teaching you were entrusted to,

Romans 10:1

10:1 Brothers and sisters, my heart’s desire and prayer to God on behalf of my fellow Israelites is for their salvation.

Romans 10:6

10:6 But the righteousness that is by faith says: “Do not say in your heart, ‘Who will ascend into heaven?’” (that is, to bring Christ down)

Romans 10:8-9

10:8 But what does it say? “The word is near you, in your mouth and in your heart” (that is, the word of faith that we preach), 10:9 because if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.