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Living Out our New Life in Christ
Christians go through life living in two worlds:
  · the past work of Christ for me (His justifying death on the cross), and
  · the present work of Christ in me (the sanctifying life of Christ in me).
That two-part existence is summarized by Paul in the Galatians 2:20 passage that we all know, in these words:
Galatians 2:20 (NKJV) I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.
Paul is defining and explaining the two parts of our one life in Christ.
Two Parts of One Life
Note the first element: I have been crucified with Christ, which is the justifying death of Christ on the cross where He gave Himself for me as it says at the end of the verse.
Galatians 2:20 (NKJV) I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.
Christ crucified, giving Himself for me is the justifying death of Christ.
That is the foundation of all we believe.
Before Christ I was spiritually destitute, dead in sin, and unable to know God.
My only hope was through faith in Christ my substitute who took all my sins on Himself, and died in my place.
That is salvation.
That is the justifying death of Christ.
That is also the doorway to what Christ began and continues to do in my life every moment since. The justifying death on the cross of Jesus opens for me the life-long sanctifying life of Christ lived out in me.
Look at the rest of Galatians 2:20:
Galatians 2:20 (NKJV) I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.
Christ’s justifying, one-time death on the cross starts a life-long sanctifying, life-changing walk of faith that changes me a bit more each day to look more like Jesus, act more like Jesus, respond more like Jesus, and live life more and more in step with Christ.
That is the Christian life designed by God for each of us His sons and daughters.
The letters to the individuals and churches of the New Testament era are built around these two realities.
We were saved and given positional truths that are to be acted upon by faith-prompted, obedient choices
Positional Truth & Practical Choices
All of the New Testament Epistles are built around these twin truths.
We call them variously:
Position & Practice. That is the division we find in so many of Paul’s letters.
Justifying Death & Sanctifying Life. That is the Galatians 2:20 life.
Grow in grace (what God did) & Grow in knowledge (our response). That is how Peter summarized these truths in his second letter.
Resolves & Prayers. That is what we see reflecting these truths in Psalm 119.
Everything God saved us to be has already been accomplished.
We only have to seek His power, and surrender each day to doing His will.