Subject: Sanctificatioin - Romans 5-6

Romans 6:12-14 (ESV Strong's)

Let not sin therefore reign in your mortal body, to make you obey its passions.
Do not present your members to sin as instruments for unrighteousness, but present yourselves to God as those who have been brought from death to life, and your members to God as instruments for righteousness.
For sin will have no dominion over you, since you are not under law but under grace.

Subject: Sanctification

Sanctification, as taught in the Bible, is the part of Salvation that follows Justification.   Before looking at any part of Salvation we have to remember that ALL parts of Salvation are of God.  Man can do any of it.   If one part of Salvation is completed by man's work than Salvation would not be totally by grace, and, yet, that is what the Bible teaches (Ephesians 2:9-10).   Once we have been Justified by God (Romans 5:1), God than starts the Sanctification process.   Once our sins have been paid for and declared forgiven (Justification of our position), than the active sin in our lives need to be cleaned up (Sanctification of our person).   Even though we are Justified, we still have the sin nature.  It can't condemn us, but it can attempt to defeat us.  Sanctification is the work of God that, by faith, we allow Him to begin to change our daily lives.  The above verses speak to that.   By faith (all parts of God's salvation are administrated to us, "by faith") we submit ourselves to God (in the above verse the word is "present").   We are to "present" our "members" (the parts of our body that previously bent on sin ... Eyes to see evil; tongue to speak evil; feet to run with evil; etc.).   Our part, in the Sanctification process is to, BY FAITH, present our members to God for His cleaning up and His control of them.   Notice what Paul will say in just a few verses:

Romans 6:19 (ESV Strong's)
I am speaking in human terms, because of your natural limitations. For just as you once presented your members as slaves to impurity and to lawlessness leading to more lawlessness, so now present your members as slaves to righteousness leading to sanctification.

Our "presenting" our members to God causes us to be "slaves to righteousness leading to sanctification."   How is that done?  In sin we simply give our members over to sin ... We submit them to evil.   Paul tells us that this is how we defeat that, however.  We now, in faith, simply give our members of to God and that will enable Him to use them and produce sanctification.   Sanctification is an act of God that, through our continued faith, God does in us and for us.