Full Assurance Of Understanding
That their hearts may be encouraged, being knit together in love, and attaining to all riches of the full assurance of understanding, to the knowledge of the mystery of God, both of the Father and of Christ. (Colossians 2:2 NKJV)
Full assurance and understanding leads to full faith and full obedience. Understanding precedes wisdom and wisdom yields good fruits. Jesus is the wisdom of God and when He saturates your soul and mind, faith will become easy and obedience will be a delight. Jesus is the one that produces good works through us and His Holy Spirit is the Spirit of faith, hope, love, mercy, wisdom, revelation, power and grace.
Jesus is the word of God and it is through the word of God that He bears fruits in us by His Holy Spirit. The Holy Spirit is the Spirit of the Word of God and the Word of God is spiritual.
The word of God is both the written word and the word spoken to us directly by the Holy Spirit. As we open up our hearts and accept the words or seeds planted in us by the Holy Spirit of Jesus, we grow and begin to bear fruits. The Holy Spirit of Jesus is the one that enables this fruit bearing by persistently working in us by His word until we bear fruits and they mature.
The Holy Spirit is the one that gives us full assurance of understanding and that understanding in turn will bear good fruits. A lot of people lean on their own understanding but the arm of flesh cannot help. Only the Holy Spirit our helper can help us bear fruits, by giving us full assurance of understanding of the word of God that He Himself authored through men.