'Increases' in the Bible

This is our [reason for] proud confidence: our conscience testifies that we have conducted ourselves in the world [in general], and especially toward you, with pure motives and godly sincerity, not in human wisdom, but in the grace of God [that is, His gracious lovingkindness that leads people to Christ and spiritual maturity].

We are not bragging beyond measure about other people’s labors. But we have the hope that as your faith increases, our area of ministry will be greatly enlarged,