I have written many notes in my Bible. Many people do too. It is good to do things that help us to remember. One set of notes is from 2 Timothy and Titus.
A Sound Mind – 2 Timothy 1:7, comes from:
• Sound Foundation – 1 Corinthians 3:11
• Sound Words – 2 Timothy 1:13
• Sound Doctrine – Titus 1:9, 13
This produces a sound mind which has understanding; not being confounded. We are able to compare spiritual things with spiritual. We are able to judge all things according to the truth of God’s Word. The Holy Spirit guides us. We come to the correct conclusions.
Another product of sound doctrine and faith is sound speech, Titus 2:8. Our faith is demonstrated in the way we talk. Sound teaching produces the right words.
Doctrine is important. Right doctrine leads to stability and consistency. Bad doctrine leads to instability and desperation.