Mark 9:4; Mark 13:26; Mark 14:62; Mark 16:7

4 And there appeared unto them Elias with Moses: and they were talking with Jesus.
26 And then shall they see the Son of man coming in the clouds with great power and glory.
62 And Jesus said , I am : and ye shall see the Son of man sitting on the right hand of power, and coming in the clouds of heaven.
7 But go your way , tell his disciples and Peter that he goeth before you into Galilee: there shall ye see him, as he said unto you.