Because of their unbelief, Jesus couldn’t do any miracles among them except to place his hands on a few sick people and heal them. And he was amazed at their unbelief. Mark 6: 5 
 

Give, and you will receive. Your gift will return to you in full—pressed down, shaken together to make room for more, running over, and poured into your lap. The amount you give will determine the amount you get back. Luke 6:38