John 11:10

Then after this he said to the disciples, “Let’s go into Judea again.”

The disciples asked him, “Rabbi, the Jews were just trying to stone you. Are you going there again?”

Jesus answered, “Aren’t there twelve hours of daylight? If a man walks in the day, he doesn’t stumble, because he sees the light of this world.

He said these things, and after that, he said to them, “Our friend Lazarus has fallen asleep, but I am going so that I may awake him out of sleep.”

The disciples therefore said, “Lord, if he has fallen asleep, he will recover.”

Now Jesus had spoken of his death, but they thought that he spoke of taking rest in sleep.