When he had heard therefore that he was sick, he abode two days still in the same place where he was.
All Commentaries on John 11:6 Go To John 11
Theophilus of Antioch
AD 184
Some understand the day to be the time preceding the Passion, the night to be the Passion. In this sense, while it is day, would mean, before My Passion; You will not stumble before My Passion, because the Jews will not persecute you; but when the night, i.e. My Passion, comes, then shall you be beset with darkness and difficulties.