1 Timothy 1:18 again addresses Timothy as 'my son', continuing the father-son language from 1 Timothy 1:2, and referencing prophecies about him.

Titus 1:4 uses the identical phrase 'my true son in our common faith' and the same greeting pattern, but addressed to Titus.

2 Timothy 1:2 repeats the same greeting—'Grace, mercy and peace from God the Father and Christ Jesus our Lord'—nearly verbatim.

Acts 16:1-3 narrates Paul's first encounter with Timothy and his circumcision, providing the background for Paul calling him 'my true son in the faith' in 1 Timothy 1:2.

Philippians 2:19-22 describes Timothy as a son with his father, mirroring Paul's 'true child' language and reinforcing their spiritual father-son bond.

In Philippians 2:20, Paul says he has 'no one like' Timothy—highlighting the unique trust and genuine care that matches the 'true child' relationship.

In 2 John 1:3, the greeting 'Grace, mercy, and peace' appears—almost identical to the blessing here, linking the two letters.

In Philippians 2:22, Timothy served 'as a son with a father'—directly mirroring the father-son spiritual relationship described here.

In 1 Corinthians 4:17, Paul calls Timothy his 'beloved and faithful child in the Lord'—directly echoing the 'true child in the faith' phrase here.

In Philemon 1:10, Paul calls Onesimus his 'child' whom he fathered in prison—using the same spiritual parent language for another convert.

In Philippians 1:1, Timothy co-sends the letter as a 'servant of Christ'—reinforcing his role as Paul's close associate in ministry.

In Galatians 4:19, Paul uses 'my little children' for the Galatians—extending the same spiritual fatherhood metaphor to a whole congregation.

In 1 Thessalonians 1:1, Timothy is again a co-sender with Paul—consistent with his trusted position as a fellow worker.

1 Thessalonians 3:2 describes Timothy as Paul's 'brother and God's coworker', reinforcing the close ministry relationship implied by 'my true son' in 1 Timothy 1:2.

1 Corinthians 4:14-15 shows Paul's pattern of calling believers his children, paralleling the 'true son' language used for Timothy in 1 Timothy 1:2.

2 Timothy 2:1 calls Timothy 'my son,' echoing the father-son relationship Paul established when he addressed him as 'true child.'

In Romans 16:21, Timothy is called Paul's 'fellow worker'—showing the same close partnership but from a coworker perspective.

Romans 1:7 offers a similar 'grace and peace from God our Father and the Lord Jesus Christ' greeting, though without 'mercy' and to a church.

Galatians 1:3 shares the 'Grace and peace from God our Father and the Lord Jesus Christ' formula, a common Pauline opening.