For they themselves report concerning us what kind of a reception we had from you; and how you turned to God from idols, to serve a living and true God,
No negative attitude is sufficient in the sight of God. It was not enough that the Thessalonians had turned from idols, there was likewise a positive side to their conversion: (1) They had come to serve the living and true God, and (2) they waited for the Second Advent  (1 Thessalonians 1:10).