7Then after this He said to the disciples, "Let us go to Judea again."
8The disciples said to Him, "Rabbi, the Jews were just now seeking to stone You, and are You going there again?"
9Jesus 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.
10"But if anyone walks in the night, he stumbles, because the light is not in him."
twelve hours in the day (v. 9) — His day (time on earth) was not yet over. His enemies could not take His life before the appointed time (John 9:4).
walks in the day (v. 9) — in His presence
walks in the night (v. 10) — a rebuke to those who don't follow Him.