Albert Barnes on John 18:13

To Annas first. Probably his house was nearest to them, and he had great authority and influence in the Jewish nation. He had been himself a long time high-priest; he had had five sons who had successively enjoyed the office of high-priest, and that office was now filled by his son-in-law. It was of importance, therefore, to obtain his sanction and counsel in their work of evil.

That same year. Jn 11:14.

(k) "Annas" Lk 3:2 (1) "that same year" "And Annas send Christ bound unto Caiphas, the high priest," Jn 18:24