Galatians 1:17 explains Paul's earlier movements—Arabia and Damascus—before he finally went to Jerusalem three years later.

Galatians 2:1 describes Paul's second Jerusalem visit after fourteen years, contrasting with the brief first visit in 1:18.

Acts 9:26-29 gives the fuller narrative of Paul's first Jerusalem visit — the same fifteen-day stay with Peter mentioned in Galatians 1:18.

Acts 9:27 records Barnabas introducing Saul to the apostles, detailing the same first Jerusalem visit Paul mentions in Galatians 1:18.

Acts 9:28 continues the account of Paul's time in Jerusalem, showing he moved freely among the apostles after being introduced.