How many letters does the top answer for “author of pauline epistles” have?

The most common answer is apostle (7 letters).

Crossword clue: author of pauline epistles

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

apostle 7 letters wd-fact-v3

(New Testament) one of the original 12 disciples chosen by Christ to preach his gospel

author of epistle to yemen 50% similar → maimon

author of pauline at the beach 50% similar → rohmer

wrote pauline epistles 50% similar → apostle