And Thomas answered and said unto him, My Lord and my God. John 20:28
We have been taught in recent decades that we are to put our Christianity into a compartment. You can be just as “spiritual” as you want on Sundays from 9 AM until Noon, but don’t take your faith to work, the store, the lake and especially don’t let your faith in Christ affect how you vote.
Somehow, I don’t think that is what Thomas had in mind. Thomas confessed Jesus as the Lord of His life, not just the Lord of Sunday morning. Jesus is either the Lord of all or he is not really your Lord at all.
America has been unique. Why, for the first time in 6000 years in human history, have Christians enjoyed civil and religious liberty? It is because of the incredible influence of the earliest generations of Pilgrims and Puritans. These families were devoted followers of Christ and looked at every aspect of the world through the lens of Scripture. They attempted to maintain a Biblical worldview regarding the way they conducted business, the way they functioned as families, how they organized their churches and how they organized themselves into civil governments.
The great commission charges us to go into all the world and make disciples. Evangelism is job one, but we are not simply to get someone to pray to receive Christ and then abandon them. We are to be making disciples out of them by training them in the Word of God and consequently to achieve a Biblical worldview on every area of life.
There are a number of great books on Christian apologetics by Josh McDowell, Frank Turek, C. S. Lewis and others. There are also great resources for complete worldview training. For example, The Truth Project is a wonderful twelve session DVD series produced by Focus on the Family that is completely self-contained.