Mark 11:23

11:23 I tell you the truth, if someone says to this mountain, ‘Be lifted up and thrown into the sea,’ and does not doubt in his heart but believes that what he says will happen, it will be done for him.

Mark 12:33

12:33 And to love him with all your heart, with all your mind, and with all your strength and to love your neighbor as yourself is more important than all burnt offerings and sacrifices.”

Mark 16:14

16:14 Then he appeared to the eleven themselves, while they were eating, and he rebuked them for their unbelief and hardness of heart, because they did not believe those who had seen him resurrected.