Jesus answered, "Are there not twelve hours in the day? If anyone walks in the day, he does not stumble, because he sees the light of this world.
John 11:9
Surrounding context
11:8 The disciples said to Him, "Rabbi, lately the Jews sought to stone You, and are You going there again?"
11:9 Jesus answered, "Are there not twelve hours in the day? If anyone walks in the day, he does not stumble, because he sees the light of this world.
11:10 But if one walks in the night, he stumbles, because the light is not in him."