1 Timothy 3:16 expands on the 'deep truths' by declaring the mystery of Christ's incarnation and exaltation.

1 Timothy 1:5 links a good conscience with sincere faith, echoing the clear conscience and deep truths here.

1 Timothy 1:19 uses nearly identical language: holding on to faith and a good conscience, as deacons must.

2 John 1:9 stresses continuing in Christ's teaching, similar to keeping hold of the deep truths of the faith.

Acts 24:16 records Paul's aim to keep a clear conscience, the same standard required for deacons here.

In 1 Corinthians 4:1, Paul describes apostles as stewards of God's mysteries — the same 'mystery of the faith' that deacons must hold with clear conscience.

Matthew 13:11 speaks of secrets of the kingdom given to disciples, akin to the deep truths deacons must hold.

In Ephesians 3:4, Paul speaks of the mystery of Christ — a similar concept to the 'mystery of the faith' here, though in a different epistle context.