Verse 10. And let these also be first proved. That is, tried or tested in regard to the things which were the proper qualifications for the office. This does not mean that they were to be employed as preachers, but that they were to undergo a proper trial in regard to their fitness for the office which they were to fill. They were not to be put into it without any opportunity of knowing what they were. It should be ascertained that they were grave, serious, temperate, trustworthy men; men who were sound in the faith, and who would not dishonour the office. It is not said here, that there should be a formal trial, as if they were candidates for this office; but the meaning is, that they should have had an opportunity of making their character known, and should have gained such respect for their piety, and their other qualifications, that there would be reason to believe that they would perform the functions of the office well. Thus, in Ac 6:3, when deacons were first appointed, the church was directed to "look out seven men of honest report," who might be appointed to the office.

Then let them use the office of a deacon. Let them be appointed to this office, and fulfil its duties.

Being found blameless. If nothing can be alleged against their character. See Barnes "1 Ti 3:2".