1 Thessalonians 2:9-12 NIV

[9] Surely you remember, brothers and sisters, our toil and hardship; we worked night and day in order not to be a burden to anyone while we preached the gospel of God to you. [10] You are witnesses, and so is God, of how holy, righteous and blameless we were among you who believed. [11] For you know that we dealt with each of you as a father deals with his own children, [12] encouraging, comforting and urging you to live lives worthy of God, who calls you into his kingdom and glory.