“rooted and built up in Him and established in the faith, as you have been taught, abounding in it with thanksgiving.”
When we walk daily by the same kind of faith with which we came to know Christ(verse 6), our lives will strengthen in the faith. A walk with God establishes a sound faith. Verse seven gives the basis for our faith.
and built up in Him
The second statement about how God strengthens our faith is we are “built up in Him.” The words “built up” means to build a house upon a specific location with an emphasis on the process. This is the second synonym for strength. As we grow in Christ, God makes us more able (“built up”) to live the Christian life.
This is the metaphor of a building. Its foundations go far into the ground and sit on firm footings. A mature Christian has a solid foundation. The foundation is Jesus Christ. Well-built buildings can withstand great earthquakes. When the Christian faces storms and earth shattering adversity, he stands firm. Christ himself is the binding force for the building of a strong faith.
The tense of this verb is ongoing. The building process for the Christian is ongoing. A Christian must be build block by block until God erects an edification construct in his soul.
Jude 20 says that we build strength into our lives by what we believe, ”But you, beloved, building yourselves up on your most holy faith, praying in the Holy Spirit.”
In Acts 20:32 and in this verse it means to build strength into the Christian life, “So now, brethren, I commend you to God and to the word of His grace, which is able to build you up and give you an inheritance among all those who are sanctified.” The grace-oriented Word of God will build us into God’s design for us.
Acts 9:31 uses this word for churches, “Then the churches throughout all Judea, Galilee, and Samaria had peace and were edified. And walking in the fear of the Lord and in the comfort of the Holy Spirit, they were multiplied.” God strengthens churches as well as individuals.
When the process of becoming strong in Christ reaches a point of stability, the Christian becomes mature.
Not only do Christians need to grow deep but we need to grow up as well. After a person comes to Christ there must be development and progress. We erect buildings brick by brick. It requires an architect, plans, materials and workers. This is the picture of a Christian who is in the process of growing up spiritually.