New International Version
Now this is our boast: Our conscience testifies that we have conducted ourselves in the world, and especially in our relations with you, with integrity and godly sincerity. We have done so, relying not on worldly wisdom but on God's grace.

New Living Translation
We can say with confidence and a clear conscience that we have lived with a God-given holiness and sincerity in all our dealings. We have depended on God's grace, not on our own human wisdom. That is how we have conducted ourselves before the world, and especially toward you.

English Standard Version
For our boast is this, the testimony of our conscience, that we behaved in the world with simplicity and godly sincerity, not by earthly wisdom but by the grace of God, and supremely so toward you.

New American Standard Bible
For our proud confidence is this: the testimony of our conscience, that in holiness and godly sincerity, not in fleshly wisdom but in the grace of God, we have conducted ourselves in the world, and especially toward you.

King James Bible
For our rejoicing is this, the testimony of our conscience, that in simplicity and godly sincerity, not with fleshly wisdom, but by the grace of God, we have had our conversation in the world, and more abundantly to you-ward.

Holman Christian Standard Bible
For this is our confidence: The testimony of our conscience is that we have conducted ourselves in the world, and especially toward you, with God-given sincerity and purity, not by fleshly wisdom but by God's grace.

International Standard Version
For this is what we boast about: Our conscience testifies that we have conducted ourselves in the world with pure motives and godly sincerity, without earthly wisdom but with God's grace—especially toward you.

NET Bible
For our reason for confidence is this: the testimony of our conscience, that with pure motives and sincerity which are from God--not by human wisdom but by the grace of God--we conducted ourselves in the world, and all the more toward you.

American Standard Version
For our glorifying is this, the testimony of our conscience, that in holiness and sincerity of God, not in fleshly wisdom but in the grace of God, we behaved ourselves in the world, and more abundantly to you-ward.

English Revised Version
For our glorying is this, the testimony of our conscience, that in holiness and sincerity of God, not in fleshly wisdom but in the grace of God, we behaved ourselves in the world, and more abundantly to you-ward.

Young's Literal Translation
For our glorying is this: the testimony of our conscience, that in simplicity and sincerity of God, not in fleshly wisdom, but in the grace of God, we did conduct ourselves in the world, and more abundantly toward you;