What is our purpose here on earth? Why did God put us here? What does he want us to do? Answers to these, and similar questions will help determine what careers we choose.
One verse that is quoted over and over again by many Christians is:
Matthew 28:19-20 "Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age."
Many lives are built around this verse. People go to Bible college, go to seminary, and become preachers and missionaries. Many who don't choose one of these "callings" often feel guilty that they are "serving God".
John 13:34-35 "A new command I give you: Love one another. As I have loved you, so you must love one another. By this all men will know that you are my disciples, if you love one another."