John 11:11 WEB

⁹  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.

¹⁰  But if a man walks in the night, he stumbles, because the light isn't in him.'

¹¹  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.'

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.