Then Jesus approaching touched them. Christ raises them up when they had fallen, and by so doing performs his office; for he came down to us for this very purpose, that by his guidance believers might boldly enter into the presence of God, and that his majesty, which otherwise would swallow up all flesh, might no longer fill them with terror. Nor is it only by his words that he comforts, but by touching also that he encourages them.

Jesus came and touched them - Exactly parallel to this account is Daniel 8:18, I was in a deep sleep, i.e. (a trance) on my face towards the ground; but he Touched me, and set me upright. From Jesus alone are we to expect Divine communications, and by his power only are we able to bear and improve them. It is very likely that this transfiguration took place in the night, which was a more proper season to show forth its glory than the day time, in which a part of the splendor must necessarily be lost by the presence of the solar light. Besides, St. Luke, Luke 9:37, expressly says, that it was on the next day after the transfiguration that our Lord came down from the mount.

And Jesus came and touched them,.... The disciples were at some little distance from Christ, but he observing the fear and surprise they were in, came to their relief and assistance; which he did not disdain to give, notwithstanding the glory he was covered with; but acts the part of a mediator between God and them, and lays hold on them to raise them up, whom the majesty of God's voice had cast down: the Persic version renders it, "he came and brought them to themselves"; who were just fainting and swooning away, at the awfulness of the voice:
and said, arise, and be not afraid: it is not the voice of an angry God, but of God well pleased with me, and in me with you; it is the voice of my God, and your God, of my Father, and your Father; arise, stand on your feet, take heart, and be of good courage, no hurt will come to you.

Arise, be not afraid. So the Lord ever speaks to his disciples in danger or fear.

Be not afraid - And doubtless the same moment he gave them courage and strength.