John 12:40; John 13:2; John 14:1; John 14:27; John 16:22

40 He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted , and I should heal them.
2 And supper being ended , the devil having now put into the heart of Judas Iscariot, Simon's son, to betray him;
1 Let not your heart be troubled : ye believe in God, believe also in me.
27 Peace I leave with you, my peace I give unto you: not as the world giveth , give I unto you. Let not your heart be troubled , neither let it be afraid .
22 And ye now therefore have sorrow: but I will see you again, and your heart shall rejoice , and your joy no man taketh from you.