Mark 13:20

13:20 And if the Lord had not cut short those days, no one would be saved. But because of the elect, whom he chose, he has cut them short.

Mark 3:16

3:16 He appointed twelve: To Simon he gave the name Peter;

Mark 3:13

Appointing the Twelve Apostles

3:13 Now Jesus went up the mountain and called for those he wanted, and they came to him.