Luke 9:44

9:44 “Take these words to heart, for the Son of Man is going to be betrayed into the hands of men.”

Luke 11:41

11:41 But give from your heart to those in need, and then everything will be clean for you.

Luke 18:1

Prayer and the Parable of the Persistent Widow

18:1 Then Jesus told them a parable to show them they should always pray and not lose heart.

Luke 24:25

24:25 So he said to them, “You foolish people – how slow of heart to believe all that the prophets have spoken!