1 Timothy 3:8,9 - Joseph Benson’s Commentary on the Old and New Testaments

Likewise the deacons Of whom see on Acts 6:3-4, and Philippians 1:1; must be grave Or serious, as some render σεμνους : men of a steady, decent, and venerable behaviour. No mention is made of presbyters, or elders, as distinct from bishops; evidently because (as has been observed on 1 Timothy 3:1, and Php 1:1) they were not distinct from them; but the two names were used promiscuously for the same persons. Not double-tongued Deceitful and dissembling, speaking one thing in one company, and another in another; not given to much wine Which would render them utterly unfit for their office; not greedy, or desirous of filthy lucre See on 1 Timothy 3:3. “With what abhorrence does the apostle everywhere speak of this! All that is gained, (above food and raiment,) by ministering in holy things, is filthy gain indeed! Far more filthy than what is honestly gained by raking kennels, or emptying common sewers.” Wesley. Holding the mystery of faith in a pure conscience Well instructed in, and firmly believing, all the great doctrines of the gospel, and adorning them by a correspondent practice; or steadfast in faith, and holy in heart and life. Although the apostle did not mention it, Timothy would readily infer from this direction concerning deacons, that it was equally necessary in bishops as in them to be sound in the faith, and holy in life. As soundness in the faith was required in deacons, it is probable they were sometimes, if not generally, employed in teaching; but whether by preaching or catechising is not certain. They likewise acted as readers in the congregations.