“Rooted and built up in him, strengthened in the faith as your were taught, and over flowing with thankfulness” (Colossians 2:7)

Orthodox Christianity being the faith in GOD’s existence is the truth in every Christian’s conscious. Growing up life might situate mortals in misery but for a good cause. In Ephesians 3:17 is stated, “So that Christ may dwell in your hearts through faith. And I pray that you, being rooted and established in love, may have power, together with all the Lord’s holy people, to grasp how wide and long and high and deep is the love of Christ,” he tests our love of GOD through obstacles and challenges.”

As a tree strikes its roots deep in the earth, so our faith should strike deep into the doctrine respecting the Savior. “Rooted and built up in him, strengthened in the faith as your were taught, and over flowing with thankfulness”; And established in the faith, as ye have been taught-  To wit, by the founders of the church, and by those faithful ministers who had succeeded them;  Abounding therein with thanksgiving – Expressing overflowing thanks to God that you have been made acquainted with truths so precious and glorious. If there is anything for which we ought to be thankful, it is for the knowledge of the great truths respecting our Lord and Savior. (Colossians 2:7, Albert Barnes Commentary)

“Rooted” implying their vitality; so “built up,” massive solidity. In the Song of Solomon, when one image is not sufficient to express the varied aspects of divine truth, another is employed to supply the idea required. Thus “walking,” a third image, expresses the thought which “rooted” and “built,” though each suggesting a thought peculiar to itself, could not express, namely, onward motion. “Rooted” is in the past tense, implying their first conversion and vital grafting “in Him.” “Built up” is present (in the Greek), implying their progressive increase in religion by union with Him. Eph 2:20 refers to the Church; but the passage here to their individual progress in edification, Now I commit you to God and to the word of his grace, which can build you up and give you an inheritance among all those who are sanctified.” Established confirmed as “even as.” abounding therein with thanksgiving, advancing to fuller maturity in the faith, “with thanksgiving” to God as the gracious Author of this whole blessing. (Acts 20:32, Jamieson Fausset Brown Bible Commentary)

Rooted and built up in him;showing how they should abide and persevere in the faith, by continuing in him as branches do in the root, and resting upon him as a building upon the foundation. “Rooted and grounded” in Him is the truth of once for all and being built up continually on that Foundation. “For we are God’s fellow workers; you are God’s field, you are God’s building. According to the grace of God which was given to me, as a wise master builder I have laid the foundation, and another builds on it. But let each one take heed how he builds on it. For no other foundation can anyone lay than that which is laid, which is Jesus Christ. Now if anyone builds on this foundation with gold, silver, precious stones, wood, hay, straw, each one’s work will become clear; for the Day will declare it, because it will be revealed by fire; and the fire will test each one’s work, of what sort it is. If anyone’s work which he has built on it endures, he will receive a reward. If anyone’s work is burned, he will suffer loss; but he himself will be saved, yet so as through fire.” (1 Corinthians 3:9-15, Matthew Poole’s Commentary)

Saint Paul bids them seek not only the first basis of their faith, but their continual growth, in Christ alone, by continual “strengthening in the faith” which rests in Him. We may remember that in the Gnostic teaching faith was held good for the beginner or the common herd, “knowledge” was the bright particular jewel of those who went on to perfection; Abounding (or, overflowing) therein with thanksgiving, the metaphor is changed. The cup of faith, filled to the full, runs over in that thanksgiving which is the expression both of faith and love.

And established in the faith; and being firm and settled in the faith, as Saint Peter adds this, not only to clear the metaphorical expressions before, but to show that they should be growing stronger as to the internal habit. Wise Solomon explained as, “Those who are planted in the house of the Lord Shall flourish in the courts of our God. They shall still bear fruit in old age; they shall be fresh and flourishing.” He repeats as it were in a parenthesis,
as ye have been taught; upon the matter, the same with as ye have received Christ in the former verse; for greater caution to them, who might be apt to have itching ears, that they should not be listening to any novel doctrines, but abide in the faith of Christ. (1 Peter 5:10, Psalm 92:13-14, Matthew Poole’s Commentary)

The soul prospers when we have clear knowledge of the truth as it is in LORD and Savior Jesus. When we not only believe with the heart, but are ready, when called, to make confession with the mouth; Knowledge and faith make a soul rich. The stronger our faith, and the warmer our love, the more will our comfort be. The treasures of wisdom are hid, not from us, but for us, in Christ. These were hid from proud unbelievers, but displayed in the person and redemption of Christ. See the danger of enticing words; how many are ruined by the false disguises and fair appearances of evil principles and wicked practices! Be aware and afraid of those who would entice to any evil; for they aim to spoil you. All Christians have, in profession at least, received Jesus Christ the Lord, consented to him, and taken him for theirs. We cannot be built up in Christ, or grow in him, unless we are first rooted in him, or founded upon him. Being established in the faith, we must abound therein, and improve in it more and more. God justly withdraws this benefit from those who do not receive it with thanksgiving; and gratitude for his mercies is justly required by God. (Matthew Henry’s Commentary)

Source: Jamieson Fausset Brown, Matthew Henry, Albert Barnes, Matthew Poole’s Commentaries