Why do Catholics call priests father

If it's wrong to call a priest father why does Paul refer to himself as father?
I am writing you this not to shame you, but to admonish you as my beloved children. Even if you should have countless guides to Christ, yet you do not have many fathers, for I became your father in Christ Jesus through the gospel.
-1 Corinthians 4:14-15 (NABRE)
It's because Paul was a priest. Father Paul of Tarsus. Paul was consecrated as a priest in acts.
While they were worshiping the Lord and fasting, the holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.” Then, completing their fasting and prayer, they laid hands on them and sent them off.
-Acts 13:2-3 (NABRE)
Paul and Barnabas were both priests. When we look at the bible through Protestant lenses, we tend to overlook certain things. I hope I'm not being too pushy with my writings, but I've been discovering new things , and decided to share them.