John 11:13 in the King James Version
Howbeit Jesus spake of his death: but they thought that he had spoken of taking of rest in sleep.
Context
12 The disciples therefore said, “Lord, if he has fallen asleep, he will recover.”
13 Now Jesus had spoken of his death, but they thought that he spoke of taking rest in sleep.
14 So Jesus said to them plainly then, “Lazarus is dead.