A.T. Robertson Commentary Mark 15:1

"And straightway in the morning the chief priests with the elders and scribes, and the whole council, held a consultation, and bound Jesus, and carried him away, and delivered him up to Pilate." — Mark 15:1 (ASV)

In the morning (πρω). The ratification meeting after day. See on Mt 26:1-5 for details.

Held a consultation (συμβουλιον ποιησαντες). So text of Westcott and Hort (Vulgate

consilium facientes), though they give ετοιμασαντες in the margin. The late and rare word συμβουλιον is like the Latin consilium. If ετοιμασαντες is the correct text, the idea would be rather to prepare a concerted plan of action (Gould). But their action was illegal on the night before and they felt the need of this ratification after dawn which is described in Lu 22:66-71, who does not give the illegal night trial.

Bound Jesus (δησαντες τον Ιησουν). He was bound on his arrest (John 18:12) when brought before Annas who sent him on bound to Caiaphas (John 18:24) and now he is bound again as he is sent to Pilate (Matthew 27:2). It is implied that he was unbound while before Annas and then before Caiaphas and the Sanhedrin.