I could tell people about the Lord and inspire them.  I could help people.  I could be a missionary, and I would help people to come to the Lord.  I could be a doctor and help people fight sickness.  I might even make machines to help people, like a robotic dog to rescue people.  Or I could make special army equipment so the people can . be safe, and I could make a machine to clean up all the trash in the ocean.