I camped on ‘obeyed from the heart’ as I meditated on Romans 6:17. It says, “But God be thanked that though you were slaves of sin, yet you obeyed from the heart that form of doctrine to which you were delivered.” I like the Amplified in verse 18. It says, “…(of conformity to the divine will in thought, purpose, and action).”

Jesus was speaking to the scribes and Pharisees about inner defilement. Matthew 15:8 says, “These people draw near to Me with their mouth, and honor Me with their lips, but their heart is far from Me.” Paul called it eyeservice.

Ephesians 6:6 says, “Not with eyeservice, as men-pleasers, but as bondservants of Christ, doing the will of God from the heart.” David wrote Psalm 86. We can echo his prayer in verse 11. It says, “Teach me Your way, O Lord; I will walk in Your truth; unite my heart to fear Your name.” 

Jesus had singleness of heart.  Hebrews 7:25 says of Jesus, “Though He was a Son, yet He learned obedience by the things which He suffered.”