Don’t be too quick to appoint anyone as an elder, and don’t share in the sins of others. Keep yourself pure.
1 Timothy 5:22 (CSB)
5 The reason I left you in Crete was to set right what was left undone and, as I directed you, to appoint elders in every town. 6 An elder must be blameless, the husband of one wife, with faithful[c] children who are not accused of wildness or rebellion. 7 As an overseer of God’s household, he must be blameless, not arrogant, not hot-tempered, not an excessive drinker, not a bully, not greedy for money, 8 but hospitable, loving what is good, sensible, righteous, holy, self-controlled, 9 holding to the faithful message as taught, so that he will be able both to encourage with sound teaching and to refute those who contradict it.
Titus 1:5-7 (CSB)
This saying is trustworthy: “If anyone aspires to be an overseer,[a] he desires a noble work.” 2 An overseer, therefore, must be above reproach, the husband of one wife, self-controlled, sensible, respectable, hospitable, able to teach, 3 not an excessive drinker, not a bully but gentle, not quarrelsome, not greedy. 4 He must manage his own household competently and have his children under control with all dignity. 5 (If anyone does not know how to manage his own household, how will he take care of God’s church?) 6 He must not be a new convert, or he might become conceited and incur the same condemnation as the devil. 7 Furthermore, he must have a good reputation among outsiders, so that he does not fall into disgrace and the devil’s trap.
1 Timothy 3:1-13
8 Deacons, likewise, should be worthy of respect, not hypocritical, not drinking a lot of wine, not greedy for money, 9 holding the mystery of the faith with a clear conscience. 10 They must also be tested first; if they prove blameless, then they can serve as deacons. 11 Wives,[b] likewise, should be worthy of respect, not slanderers, self-controlled, faithful in everything. 12 Deacons are to be husbands of one wife, managing their children and their own households competently. 13 For those who have served well as deacons acquire a good standing for themselves and great boldness in the faith that is in Christ Jesus.
see Spiritual leadership for men and women for a discussion of the phase “the husband of one wife”.