Okay kiddo, so a renewal theologian is someone who studies God and the Bible, but they also believe that God is still doing new things in the world and in people's lives today. This means they think that God's work didn't stop a long time ago, but that it's still going on now.
Renewal theologians believe that God wants people to have a closer relationship with Him and to experience Him in new ways. They think that people can do this by praying and reading the Bible, but also by asking the Holy Spirit, which is a part of God, to help them hear from Him and understand His will.
Renewal theologians also believe in things like spiritual gifts, which are special abilities that God gives to people so they can help others and serve Him. These gifts could be things like healing, prophecy or speaking in tongues, which means being able to speak in languages that you don't normally know.
In summary, a renewal theologian is someone who believes in God's ongoing work in the world and that people can experience Him in new and amazing ways today.