It is God’s will that you should be sanctified: that you should avoid sexual immorality; 1 Thessalonians 4:3
We are intended to be sanctified but what does that mean. It means to be like Christ and it is a process, it is something we work at every day and we do not do this on our own but with the help of the Holy Spirit. Let us praise God that we are justified (made right with God) through his work and he equips us to be sanctified (more like Christ).
But, “Let the one who boasts boast in the Lord.” For it is not the one who commends himself who is approved, but the one whom the Lord commends.