Mark 2:8

2:8 Now immediately, when Jesus realized in his spirit that they were contemplating such thoughts, he said to them, “Why are you thinking such things in your hearts?

Mark 11:29

11:29 Jesus said to them, “I will ask you one question. Answer me and I will tell you by what authority I do these things:

Mark 13:8

13:8 For nation will rise up in arms against nation, and kingdom against kingdom. There will be earthquakes in various places, and there will be famines. These are but the beginning of birth pains.