1 Thessalonians 2:9-13

You remember our labor and toil, brothers and sisters; we worked night and day, so that we might not burden any of you while we proclaimed to you the gospel of God. You are witnesses, and God also, how pure, upright, and blameless our conduct was toward you believers. As you know, we dealt with each one of you like a father with his children, urging and encouraging you and pleading that you lead a life worthy of God, who calls you into his own kingdom and glory.