In part 2 of our current series in 1 Thessalonians Paul was so thankful for the effect of the Gospel in their lives. How do we become mature in Christ. When Paul talks about this, he does it from the point of view of how they presented the Gospel so it reflects how it was received. It was fruitful, faithful, factual and fervent. The Gospel was effective in changing lives while he was their and even after he had moved on.