1 Thessalonians 2:4-6

but as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts. For neither at any time used we flattering words, as ye know, nor a cloke of covetousness; God is witness: nor of men sought we glory, neither of you, nor yet of others, when we might have been burdensome, as the apostles of Christ.