Galatians 1:18

18 Then after three years, I went up to Jerusalem to get acquainted with Cephasa and stayed with him fifteen days.

Read Galatians 1:18 Using Other Translations

Then after three years I went up to Jerusalem to see Peter, and abode with him fifteen days.
Then after three years I went up to Jerusalem to visit Cephas and remained with him fifteen days.
Then three years later I went to Jerusalem to get to know Peter, and I stayed with him for fifteen days.