"Missio Dei" is a big phrase that means "God's mission." Think of it like a big adventure that God wants to go on to make the world a better place. And everyone is invited to go on this adventure with God!
God's mission is to show love and kindness to everyone in the world. He wants to make sure that everyone knows how much he loves them and how special they are. And he wants to help people who are hurting or sad, and make things better for them.
Sometimes we can help with God's mission by showing love and kindness to others too. We can be kind to our friends and family, and help people in our community who may be struggling. And when we do these things, we are helping God with his mission to make the world a happier and better place.