A.T. Robertson Commentary Matthew 26:3

"Then were gathered together the chief priests, and the elders of the people, unto the court of the high priest, who was called Caiaphas;" — Matthew 26:3 (ASV)

Then were gathered together the chief priests and elders of the people (Τοτε συνηχθησαν ο αρχιερεις κα ο πρεσβυτερο του λαου). A meeting of the Sanhedrin as these two groups indicate (cf. 21:23).

Unto the court (εις την αυλην). The atrium or court around which the palace buildings were built. Here in this open court this informal meeting was held. Caiaphas was high priest A.D. 18 to 36. His father-in-law Annas had been high priest A.D. 6 to 15 and was still called high priest by many.