I could stay days in Acts 9 it is so full of information. They had to be careful how they spoke then and we do now. I have been guilty of using the wrong Noun and now ,just like then the enemy tries hard to catch people making a mistake.

“Acts 9:17 And Ananias went his way, and entered into the house; and putting his hands on him said, Brother Saul, the Lord, even Jesus, that appeared unto thee in the way as thou camest, hath sent me, that thou mightest receive thy sight, and be filled with the Holy Ghost.
18 And immediately there fell from his eyes as it had been scales: and he received sight forthwith, and arose, and was baptized.”

God the Father , Jesus The Lord and the Holy Ghost is complicated. It is important to uses the right Name. Ananias did not say God appeared but Jesus the Lord and Saul received the Holy Ghost.

God sent Jesus our Lord to be the ultimate sacrifice so we may receive the Holy Ghost...We live in a world Saul would still be in prison for his acts. This story is so important to show there is none like God.
Our God is not cookie cutter as our world is from homes to education. We have limited Who we say we love and set up our own standards of Who and what God uses. Saul turned into Paul is what God does.

“Acts 9:19 And when he had received meat, he was strengthened. Then was Saul certain days with the disciples which were at Damascus. 20 And straightway he preached Christ in the synagogues, that he is the Son of God.”