(Th purpose and work of Grace is to establish our heart )
"He Establishes Our Heart"
By Arthur J Licursi
1 Thes. 3:13 To the end he may stablish (Greek, sterizo, turned resolutely) your hearts unblameable in holiness before God, even our Father, at the coming of our Lord Jesus Christ with all his saints.
The most changeable thing about us is our heart - which is principally our soul, with our mind saying "I think...thus and such, our emotions saying "I feel..." and our will, saying "I want...". It’s all about us. According to our natural birth our heart is changeable but always bent toward our self. Instead of having an established heart, all we Christians begin with having a changeable, a movable heart; moved by self-interested thoughts, emotions, and desires.
We need our heart to become solidly established, one that is always bent toward God, not a heart that is changeable and fleeting.
Our heart may be changeable not only in relation to other people, but even in our relationship with the Lord. Yet, God is the faithful and unchanging One; He never changes. His love and grace are always bent toward us. We are the ones who are changeable; we are changeable in our heart. For this reason, Paul was concerned that the hearts of the new believers at Thessalonica would be set, built up, and established by the Lord.
Although we need our heart to be established, we are not able to do this ourselves. Only the Lord can establish our heart. Therefore, we need Him to cause our heart to be solidly established and built up. We receive the mercy and grace from the Lord as He orders the happenings, circumstances and situations of our lives, so that we may be brought to yield to Him… to give Him the permission to establish our heart. Most of us have prayed at one time or another, “Lord, I want to give you my life; make me a holy person.” Upon hearing such a prayer He is working on our behalf to fulfill that God-given desire. Recognizing our free will; He awaited our permission before He works within us to bend our will and do the establishing. When our heart has been established, resolutely turned to Him, it is then changed; it is bent toward being blameless before God.
As always, even this “establishing” is the work of God's grace in our lives. Philip. 2:13 For it is God which worketh in you both to will and to do of his good pleasure. 1 Thes. 5:24 Faithful is he that calleth you, who also will do it. And of this we may be confident. Philip. 1:6 Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ: