John 11:11-15

After saying these things, he said to them, “Our friend Lazarus has fallen asleep, but I go to awaken him.” The disciples said to him, “Lord, if he has fallen asleep, he will recover.” Now Jesus had spoken of his death, but they thought that he meant taking rest in sleep. Then Jesus told them plainly, “Lazarus has died, and for your sake I am glad that I was not there, so that you may believe. But let us go to him.”