Ephesians 6:20
"For which I am an ambassador in bonds: that therein I may speak boldly, as I ought to speak."Ephesians 6:20 (KJV)
Context from Ephesians 6
18
Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;
19
And for me, that utterance may be given unto me, that I may open my mouth boldly, to make known the mystery of the gospel,
20
For which I am an ambassador in bonds: that therein I may speak boldly, as I ought to speak.
21
But that ye also may know my affairs, and how I do, Tychicus, a beloved brother and faithful minister in the Lord, shall make known to you all things:
22
Whom I have sent unto you for the same purpose, that ye might know our affairs, and that he might comfort your hearts.