The saying is trustworthy and deserving of full acceptance, that Christ Jesus came into the world to save sinners, of whom I am the foremost. —1 Timothy 1:15
Paul uses the word “trustworthy” seven times in his letters: one to the Corinthians, twice to Titus, but four times to Timothy, including three times in his first letter alone! Apparently, as Paul communicates with Timothy, he is concerned to identify for Timothy what is true and what is false, what is trustworthy and what is hearsay.