Old English, via Latin from Greek epistolē, from epistellein 'send news', from epi 'upon, in addition' + stellein 'send'. The word was reintroduced in Middle English from Old French
使徒书信(《圣经·新约》中使徒们早期的书信) In the Bible, the Epistles are a series of books in the New Testament which were originally written as letters to the early Christians.