After he was rescued from death threats he was sent away to Tarsus. We can’t be sure how long he was there, but it was probably about five to eight years. Many conclude that the trials referred to in 2 CORINTHIANS 11:23-27 took place during this period. Why? *

“We can be fairly sure that some of the trials referred to in 2 Corinthians 11:23-17 took place during this period, mainly because the ministry that is described in Acts does not accommodate all of them.  There Paul mentions, for example, five lashings at the Jews’ hands (v. 24), none of which is described elsewhere in Acts.  Such lashings were a common form of synagogue discipline.  No double Paul made persistent efforts in the synagogues in his home area to turn his hearers to faith in Jesus as Messiah and Redeemer, and no doubt he was subjected to discipline for his efforts.”

Excerpt from Paul The Apostle, Robert E. Picirilli (p. 60)