Paul explains why a man's home life matters for church leadership. The question reasons from the smaller to the larger. Gill says ruling a household is "an affair of less importance, and more easy to be done" than caring for a church. Barnes explains that "A church resembles a family": if a man is "severe, partial, neglectful, or tyrannical at home," he cannot be trusted with the larger family of God's people. The question lets Timothy see the answer for himself as he weighs who is ready to lead.

The answer is plain: he cannot. Paul moves straight on with more qualifications: "Not a novice" (1 Timothy 3:6) and one with "a good report of them which are without" (1 Timothy 3:7). He applies the same test to deacons, who must be "ruling their children and their own houses well" (1 Timothy 3:12). Then he gives his purpose: that Timothy may know how to behave "in the house of God, which is the church of the living God" (1 Timothy 3:15).

Paul had asked Timothy to "abide still at Ephesus" to stop false teaching (1 Timothy 1:3), and part of that work was choosing faithful leaders. The KJV's "bishop" is rendered "overseer" in the ESV (1 Timothy 3:1-2). The Greek verb for "take care of" is epimeleomai, which Thayer defines as "to take care of a person or thing." Its only other New Testament uses are in the parable of the Good Samaritan, who "took care of him" and told the innkeeper, "Take care of him" (Luke 10:34-35).

Paul's question rests on a picture he makes plain a few verses later: the church is "the house of God" (1 Timothy 3:15). Matthew Henry writes, "The church is the house of God; he dwells there." If the church is God's household, then the people who lead it must already know how to care for a household of their own.

The word Paul chooses also matters. Barnes points out that Paul speaks of the father as "ruling" his family but describes the leader as having "a tender care for the church." The same verb is used of the Samaritan who "took care of" a wounded stranger (Luke 10:34). Barnes notes that the gravity required at home means a man "free from levity," not a harsh one. God's house is to be led by people whose care has already been tested where it is hardest to hide: at home.