2 Thes. 1:11-12 (ESV)
To this end we always pray for you, that our God may make you worthy of his calling and may fulfill every resolve for good and every work of faith by his power,  so that the name of our Lord Jesus may be glorified in you, and you in him, according to the grace of our God and the Lord Jesus Christ.
God may make you worthy of his calling and may fulfill every resolve for good and every work of faith by his power. We always fall back to the Old Adam and think we have to make ourselves worthy of the calling. This is the whole sanctification by third use of the law trap that inundates Lutheranism today, a sore agitated by and infection of American Evangelicalism (Wesleyanism). We fail to see that it is God who makes us worthy of the calling. He is the one who sanctifies us. He does this the same way he justifies us. He forgives us with the blood of His Son Jesus Christ. With that forgiveness, He forgives our “righteous deeds,” as I said earlier this week.
It is funny. Sometimes when we come to realize the complete sinfulness of our human nature, and inability to do good, we become afraid to even try. If I sin by doing “good” why do it? Sometimes this is just and enthusiasm for the Gospel that washes over a person when they first hear it. It is good to see that enthusiasm. It is natural to rebel against those things that once bound your conscience, a Muslim convert eating pork with a newfound ravenous appetite. There is the convert from evangelicalism that gets drunk off one beer, and does it every night! I think I can identify with that. There is a joy and a defiance towards legalism, and an enthusiasm for the Gospel that I share. But sometimes this can become a legalism of its own. A legalism I’ve been guilty of myself. It is one that refuses to do good works, because good works are sinful. I suppose there is a time to make that point. But once it is made it is made. Why should we fear good works because they are sinful? So is everything we do when we do them as sinners. Eating and drinking water as a sinner is sin. But in faith it is to the glory of God. Same with our good works, in faith they are done to the glory of God. We have to be on guard not to do them to our own glory. We do not want to fall into the trap that we have to do them or we will lose our salvation. But knowing that Christ has gained our salvation, we can use them to show the love of Christ to our neighbor. Sure in and of themselves they are sinful, but in Christ they are forgiven and good. So to quote Luther, “Sin Boldly!” Do a good work. God has made you worthy of it.