Mark 3:13 - Ellicott's Commentary On The Whole Bible

And he goeth up into a mountain. — The sequence of events in St. Mark varies much, it will be seen, from St. Matthew, and comes nearer to that in St. Luke. What follows is, like the parallel narrative of Luke 6:12-13, the selection rather than the mission of the Twelve, the latter appearing in Matthew 10. In St. Luke we find the noticeable fact that the night had been spent in prayer, apparently, as usual, alone, and that when it was day He called the company of the disciples, who had waited below, and made choice of the Twelve.