Titus 1:6
If any be blameless, the husband of one wife, having faithful children not accused of riot or unruly.
Cross-reference
In 1 Samuel 2:22, Eli's sons commit sexual sin — a negative example of unfaithful children that would disqualify an elder (Titus 1:6).
In 1 Samuel 2:29, God rebukes Eli for honoring his wicked sons above Him — showing the danger of failing to raise faithful children.
In 1 Samuel 3:13, God judges Eli because 'he restrained them not' — exactly the failure that disqualifies an elder with unruly children.
1 Timothy 3:2-7 provides a parallel list of elder qualifications — reinforcing the same standards Paul gave Timothy.
1 Timothy 3:4 gives a parallel qualification: elders must rule their own house well with children in subjection — reinforcing the same principle.
1 Timothy 3:5 explains the logic: inability to manage one's household disqualifies from caring for the church — directly supporting Titus 1:6.
1 Timothy 3:12 applies the same marital and household standards to deacons — expanding the qualification beyond elders.
Malachi 2:15 links marriage faithfulness to godly offspring — directly paralleling why elders' children must be believers.
Genesis 18:19 shows Abraham directing his children in God's ways — a model for the elder's household requirement.
Leviticus 21:9 shows that a priest's daughter's misconduct disgraces her father—mirroring the principle that elder's children must be faithful to avoid reproach here.
Proverbs 28:7 contrasts a wise son with one who keeps riotous company — echoing the 'riot' that disqualifies an elder's children.