epistello denotes communicating in writing, whether sending instructions or referring to a brief written appeal.

The attested use concerns written communication: an instruction to send a written directive in Acts 15:20 and a completed brief written exhortation in Hebrews 13:22.

1. Communicating by a written message · dominant

   In Acts 15:20, the aorist active infinitive occurs in the proposal that a message be sent telling recipients to abstain from specified practices; the APB renders the clause, "But we should write to them to abstain from the things polluted by idols and from sexual immorality and from what has been strangled and from blood." In Hebrews 13:22, the first-person aorist active indicative refers to a completed brief written exhortation; the APB renders, "for I have written to you briefly."

   Acts 15:20Hebrews 13:22

In the Anselm Project Bible: The APB presents the term with "write to them" in Acts 15:20 and "have written to you briefly" in Hebrews 13:22. These are verse-level renderings rather than definitions.