the Week of Proper 20 / Ordinary 25
Cyclopedia of Biblical, Theological and Ecclesiastical Literature
(Ἀχαϊκός, an Acheaun), a Christian of Corinth, who, with Fortunatus, was the bearer of Paul's first epistle to the Church there, to whom he kindly commends them as having rendered him personal assistance (1 Corinthians 16:17, subscription; comp. ver. 15, 16), A.D. 54.
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McClintock, John. Strong, James. Entry for 'Achaicus'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​a/achaicus.html. Harper & Brothers. New York. 1870.