Exodus 20:8-11 and Colossians 3:17, 22-25 govern this thematic sermon on calling to serve the Lord Christ. There are no part-time Christians, if you trust in Jesus then you are serving the Lord Christ in all your work. William Wilberforce, who led the effort to end the slave trade, is an ideal example. He thought about going into the ministry of the Word but then he would have missed his calling to serve the Lord Christ in the English parliament.
This sermon complements the next. It was delivered at a neutral pulpit for the Niagara pastor nominating committee.