Therefore, as you received Christ Jesus the Lord, so walk in him, rooted and built up in him and established in the faith, abounding in thanksgiving. (Colossians 2:6-7)
To be bursting with thankfulness is a true witness of the Spirit within us. For the voice of thanksgiving speaks without ceasing of the goodness of God. It claims nothing. It sees no merit in man’s receiving but only of God’s giving. It marvels at his mercy. It is the language of joy just because it need look no longer to its own resources. It is an expression of dependence on another. It is the speech of the Psalmist and is the natural tongue of the apostles. It is also heard on the lips of the ‘weakest Christian on his knees.’
Here is a fine test of by which we may test the authentic quality of our spiritual growth. To be ‘filled with gratitude’ is to be ‘filled with the Spirit of Christ.’ The Christian rejoicing in this blessing of a thankful heart will have his eyes fixed upon the right person and the right place, Christ at God’s right hand.
R.C. Lucas, The Message of Colossians & Philemon (Downer’s Grove: IVP, 1980), 93-94.