John 18:1
1When Jesus had spoken these words, he went out with his disciples over the brook Kidron, where there was a garden, into which he and his disciples entered.
The prayer is finished; he goes out. Kidron, garden, disciples with him—John will not let the arrest look like a snatch in a random alley. Wesley: a private place for devotion, and so that the people would not attempt a tumultuous rescue.
He walks into a known place on purpose. The hour is not a trap that closes on an unwitting teacher. Disciples still accompany him; the next verses will show both his care for them and their confusion.
Spoken words of chapter 17, then Kidron. John points the place so we see a willing going, not a misstep. Calvin: he entered a garden Judas knew, to present himself of his own accord.
The Son who has just spoken of those the Father gave him now walks toward the hour. Geography serves obedience. The garden is the appointed threshold, not an accident of night.