There are several remarks about work and against idleness in 1 & 2 Thessalonians. But we mustn’t get the wrong idea as to what this focus on work is for. Paul’s concern with work is work that is an outpouring of our faith, and these works express a faith that is in Christ. Our good works aren’t about making ourselves good, rather they are to point to Jesus, fulfill our purpose, and glorify God. Paul’s says in 2 Thessalonians:
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.
2 Thessalonians 1:11-12