Mark 7:3

7:3 (For the Pharisees and all the Jews do not eat unless they perform a ritual washing, holding fast to the tradition of the elders.

Mark 7:5

7:5 The Pharisees and the experts in the law asked him, “Why do your disciples not live according to the tradition of the elders, but eat with unwashed hands?”

Mark 11:27

11:27 They came again to Jerusalem. While Jesus was walking in the temple courts, the chief priests, the experts in the law, and the elders came up to him

Mark 14:53

Condemned by the Sanhedrin

14:53 Then they led Jesus to the high priest, and all the chief priests and elders and experts in the law came together.