Acts 26:12

"While on a journey to Damascus for this purpose, I was acting under the authority and directive of the leading priests.

John 7:45-48

So, [when] the Temple guards [See verse 32] returned to the leading priests and Pharisees, they were asked, "Why did you not bring Jesus here?"

John 11:57

Now the leading priests and the Pharisees had given orders that if anyone knew where Jesus was, he was to report it, so they could arrest Him.

Acts 9:1-8

With every breath [it seemed], Saul [expressed his desire to] threaten and murder the Lord's disciples and [even] went to the head priest

The head priest can also verify all this, and so can the body of [Jewish] elders. They furnished me with letters to our fellow-Jews in Damascus, to which I also traveled to bring people back here to Jerusalem, bound in chains to be punished.

Acts 26:10

So, I was doing this in Jerusalem, having received [my] authority from the leading priests. I both imprisoned many of the saints [i.e., God's holy people] and [even] voiced my approval when they were put to death [See 8:1].