1 Corinthians 4:2

Here, moreover, it is required in stewards, that one be found faithful.

2 Corinthians 2:17

For we are not as the many, making merchandise of the word of God; but as of sincerity, but as of God, in the sight of God, we speak in Christ.

2 Corinthians 5:20

On behalf of Christ, therefore, we are ambassadors, as though God were beseeching through us, we entreat you on behalf of Christ, be ye reconciled to God

1 Timothy 1:12

I have thanks for Him Who empowered me, Christ Jesus our Lord, because He accounted me faithful, putting me into His service,

2 Timothy 2:2

And the things which you heard from me, through many witnesses, these commit to faithful men, who will be competent to teach others also.

Treasury of Scripture Knowledge

Summary

A wicked messenger falleth into mischief: but a faithful ambassador is health.

Bible References

Wicked

2 Corinthians 2:17
For we are not as the many, making merchandise of the word of God; but as of sincerity, but as of God, in the sight of God, we speak in Christ.