and they
Matthew 17:19
Then came the disciples to Jesus apart, and said, Why could not we cast him out?
Matthew 17:20
And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
2 Kings 4:29-31
29
Then he said to Gehazi, Gird up thy loins, and take my staff in thine hand, and go thy way: if thou meet any man, salute him not; and if any salute thee, answer him not again: and lay my staff upon the face of the child.
30
And the mother of the child said, As the LORD liveth, and as thy soul liveth, I will not leave thee. And he arose, and followed her.
31
And Gehazi passed on before them, and laid the staff upon the face of the child; but there was neither voice, nor hearing. Wherefore he went again to meet him, and told him, saying, The child is not awaked.
Luke 9:40
And I besought thy disciples to cast him out; and they could not.
Acts 3:16
And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all.
Acts 19:15
And the evil spirit answered and said, Jesus I know, and Paul I know; but who are ye?
Acts 19:16
And the man in whom the evil spirit was leaped on them, and overcame them, and prevailed against them, so that they fled out of that house naked and wounded.