It looks like the book title in your question is blank. Which Bible book do you want to know about?

If you aren’t sure, here’s a quick evangelical-oriented overview of who is most often considered the “likely author” for several major books and why evangelicals commonly accept those attributions — and how authorship is evaluated:

Common evangelical attributions
– Pentateuch (Genesis–Deuteronomy): traditionally Moses. Many evangelicals affirm Mosaic authorship (or Mosaic core with later editorial additions).
– Historical books (Joshua–Esther): often attributed to the leaders or scribes associated with those events (e.g., Joshua for Joshua), though evangelical scholars also accept later editors/redactors in some books.
– Psalms: many attributed to David (but not all); others to Asaph, the sons of Korah, Solomon, Moses, etc., as the Psalm headings indicate.
– Proverbs, Ecclesiastes, Song of Songs: traditionally Solomon.
– Major prophets (Isaiah, Jeremiah, Ezekiel, Daniel): traditionally the prophet named in the book; many evangelicals defend single-author Isaiah (the prophet Isaiah) rather than multiple authors.
– Gospels: Matthew, Mark, Luke, John are traditionally attributed to those four; most evangelicals accept these attributions and rely on early church testimony (Papias, Irenaeus) and internal evidence.
– Acts: Luke (same author as Luke-Acts).
– Epistles: Paul is accepted by evangelicals as the author of Romans, 1–2 Corinthians, Galatians, Philippians, 1–2 Thessalonians (though 2 Thessalon.), Colossians, Philemon; Hebrews is debated (traditionally Pauline early on, but many evangelicals today say “unknown” or consider suggestions like Luke, Barnabas, or Paul with qualifications).
– Pastoral Epistles (1–2 Timothy, Titus): traditionally Paul; some evangelicals accept Pauline authorship while others question it based on style and vocabulary.
– General epistles: James (traditionally James the brother of Jesus), 1–2 Peter (Peter for 1 Peter; 2 Peter more debated), Jude (Jude, brother of Jesus), 1–3 John (traditionally John the Apostle).
– Revelation: traditionally John the Apostle (called John of Patmos); many evangelicals hold to Johannine authorship.

How evangelicals judge authorship
– Internal claims: Does the book name or imply an author?
– Early church testimony: what did early leaders (Irenaeus, Clement, Papias, Tertullian, etc.) report?
– Linguistic/style evidence: vocabulary, grammar, and literary style compared to other works.
– Theological and historical fit: does the content match what is known about the candidate author’s life and context?
– Manuscript/tradition consistency: how early and consistent is the attribution in the manuscript tradition?

If you tell me which specific book you meant, I can share the evangelical view of its most likely author, the evidence supporting that view, and why it matters for interpretation.