and they
Matthew 17:19
Then the disciples approached Jesus privately and said, "Why couldn't we drive it out?"
Matthew 17:20
"Because of your little faith," He told them. "For I assure you: If you have faith the size of a mustard seed, you will tell this mountain, 'Move from here to there,' and it will move. Nothing will be impossible for you.
2 Kings 4:29-31
29
So Elisha said to Gehazi, "Tuck your mantle under your belt, take my staff with you, and go. If you meet anyone, don't [stop to] greet him, and if a man greets you, don't answer him. Then place my staff on the boy's face."
30
The boy's mother said [to Elisha], "As the LORD lives and as you yourself live, I will not leave you." So he got up and followed her.
31
Gehazi went ahead of them and placed the staff on the boy's face, but there was no sound or sign of life, so he went back to meet Elisha and told him, "The boy didn't wake up."
Luke 9:40
I begged Your disciples to drive it out, but they couldn't."
Acts 3:16
By faith in His name, His name has made this man strong, whom you see and know. So the faith that comes through Him has given him this perfect health in front of all of you.
Acts 19:15
The evil spirit answered them, "Jesus I know, and Paul I recognize-- but who are you?"
Acts 19:16
Then the man who had the evil spirit leaped on them, overpowered them all, and prevailed against them, so that they ran out of that house naked and wounded.