Introducing paragraph: introduce yourself to recipient of the letter give reasons for writing. (sampletemplates.org)
You will need to ask questions about the job description — better yet, obtain a copy of one and determine if you personally or professionally know the intended recipient of the letter. (coverlettersandresume.com)
Aside from this, it is questionable whether the passage can directly be applied to believers today since the original recipients of the letter were former Jews who were now being pressured through persecution to return to the customs and laws of Judaism. (redeeminggod.com)