1 Thessalonians 2:9-13

For you recall, brothers and sisters, our labor and hardship: it was by working night and day so as not to be a burden to any of you, that we proclaimed to you the gospel of God.

You are witnesses, and so is God, of how devoutly and rightly and blamelessly we behaved toward you believers;

just as you know how we were exhorting and encouraging and imploring each one of you as a father would his own children,

so that you would walk in a manner worthy of the God who calls you into His own kingdom and glory.

For this reason we also constantly thank God that when you received the word of God which you heard from us, you accepted it not as the word of mere men, but as what it really is, the word of God, which also is at work in you who believe.