Charles Spurgeon Commentary Acts 18:5

"But when Silas and Timothy came down from Macedonia, Paul was constrained by the word, testifying to the Jews that Jesus was the Christ." — Acts 18:5 (ASV)

He may not have brought out the whole truth at first, but argued little by little to bring them, as it were, up the steps until they should be prepared to receive the grand doctrine that Jesus is the anointed one. HIS spirit was pressed at last to come to that point more fully.