2 Thessalonians 3:3

But the Lord is faithful, who shall establish you, and guard you from the evil one.

James Moffatt also witnessed to the true meaning of "faith" in this passage, as follows:

Paul writes from Corinth that while everyone has the chance, not all have the desire to arrive at the faith ([@Pistis] here is the faith of the gospel, or Christianity). By a characteristic play upon the word, Paul, 2 Thessalonians 3:3, hurries on to add, "but the Lord is faithful."[7]

The general idea of the verse is that a trustworthy God is more than a match for untrustworthy men.