For you remember, brethren, our labor and toil; for laboring night and day, that we might not be a burden to any of you, we preached to you the gospel of God.
1 Thessalonians 2:9
Surrounding context
2:8 So, affectionately longing for you, we were well pleased to impart to you not only the gospel of God, but also our own lives, because you had become dear to us.
2:9 For you remember, brethren, our labor and toil; for laboring night and day, that we might not be a burden to any of you, we preached to you the gospel of God.
2:10 You are witnesses, and God also, how devoutly and justly and blamelessly we behaved ourselves among you who believe;