Acts 5:1-11:

But a certain man named Ananias, with Sapphira his wife, sold a possession,
And kept back part of the price, his wife also being privy to it, and brought a certain part, and laid it at the apostles’ feet.
But Peter said, Ananias, why hath Satan filled thine heart to lie to the Holy Ghost, and to keep back part of the price of the land?
Whiles it remained, was it not thine own? and after it was sold, was it not in thine own power? why hast thou conceived this thing in thine heart? thou hast not lied unto men, but unto God.
And Ananias hearing these words fell down, and gave up the ghost: and great fear came on all them that heard these things.
And the young men arose, wound him up, and carried him out, and buried him.
And it was about the space of three hours after, when his wife, not knowing what was done, came in.
And Peter answered unto her, Tell me whether ye sold the land for so much? And she said, Yea, for so much.
Then Peter said unto her, How is it that ye have agreed together to tempt the Spirit of the Lord? behold, the feet of them which have buried thy husband are at the door, and shall carry thee out.
Then fell she down straightway at his feet, and yielded up the ghost: and the young men came in, and found her dead, and, carrying her forth, buried her by her husband.
And great fear came upon all the church, and upon as many as heard these things.

See also:

Pros and Cons of Being on TV
Sickness as Chastening and Judgment in the New Testament
How NOT to Testify About Your Healing
Can “Sin in the Camp” Stop Me from Getting Healed?
Does Faith Come from Your Spirit, Your Mind or Somewhere Else?
Objection: If Faith Healers Were Real, One Would Have Won a Million-Dollar Prize Offered by a Renowned Skeptic for Proof of Supernatural Ability
Objection: God Creates Evil (Isaiah 45:7), Kills, and Wounds (Deuteronomy 32:39)