Sanctification can be achieved individually by members of Protestant communities, as Christ wills. They do not form a church inasmuch as they do not have a community of believers that strive for unity, maintain the sacraments of Holy Orders and Eucharist, and preserve the historical deposit of faith given the Apostles and the fathers of the Church, and in a specific way given St. Peter.
So Protestants are really just a sort of vague social club?
I would rewrite your erroneous job description as the following:
They form Christ's church on earth who are a community of believers that strive for unity, maintain observe the sacraments of Holy Orders and Eucharist the Lord's Supper and Baptism, and preserve the historical deposit of faith given the Apostles and the fathers of the Church Holy Scriptures as given to all believers in the inerrant word of God, and in a specific way given St. Peter who are led by the sure and certain hand of the Holy Spirit.
Saved by grace alone.