Trinity Lutheran Church believes in proclaiming the gospel of Jesus Christ with worship, education, music, fellowship and service to the needy. This means the church has an active altar guild, children's worship, clean-up day, disaster response and youth programs. There is also vacation Bible school, reading groups and lecture series.
The church is a member of the Metropolitan Washington, D.C. Synod of the Evangelical Lutheran Church in America. It's also a reconciling In Christ congregation and a Stephen Ministry congregation.