Colossians 2:6-7 "Therefore as you have received Christ Jesus the Lord, so walk in Him, 7 having been firmly rooted and now being built up in Him and established in your faith, just as you were instructed, and overflowing with gratitude."
1. Strengthen the believer's confidence. Galatians 4:19
The second way internal assurance is strengthened is by way of the scriptures. Just as testing without the scriptures can be only a destructive process, studying of the scriptures apart from difficulties can lead to puffed up people. Where else does the true knowledge of Jesus Christ derive? The Scriptures! Colossians 2:2-3 speaks about the richness of knowing Christ that can only come from the scriptures, and then 2:4-5 speaks of the strengthening of faith in Christ that comes from the scriptures. Many references in the Bible speak to the scriptures feeding the faith of the believer. Job 23:12 has a suffering Job describing God's words as more precious than His daily food. Psalm 12:6 has David surrounded by his enemies and being able to have faith in the words of God that are purer than silver tried in a furnace seven times. In Matthew 4:4, we see Jesus in the midst of temptation saying to Satan that "man shall not live by bread alone, but by every word that proceeds out of the mouth of God." Faith comes from hearing the word of God in Romans 10:17 and Jesus chooses to cleanse His church by the scriptures in Ephesians 5:26. Let the reader notice how many of these texts depict the person drawing assurance from the scriptures in difficult times. Both go hand in hand. Growing in knowing Jesus Christ builds an internal assurance as the believers wrestles in their faith through difficult times and builds their faith upon the richness of God's Word.
The internal assurance that comes from the interaction between searching the scriptures and experiencing difficulties is spelled out in the various phrases of Colossians 2:2-5
a). "attaining to all the wealth that comes from the full assurance of understanding." 2:2a
b). "resulting in a true knowledge of God’s mystery, that is, Christ Himself in whom are hidden all the treasures of wisdom and knowledge." 2:2-3
c). "I say this so that no one will delude you with persuasive argument." 2:4
Paul then expresses how he rejoices in 2:5 "of rejoicing to see your good discipline and the stability of your faith in Christ." So it does benefit every Christian to keep on growing in knowing Jesus Christ by virtue of the internal assurance that occurs as a result of getting to know him in the scriptures and through times of suffering.