Jesus said that the second commandment (James identifies this as a ‘royal law’) “love your neighbour as yourself” is essential (James 2:8; Matthew 5:43). Favouritism breaks that law, because every person, regardless of any natural barrier between us, is our neighbour.
In James 2:14, James asks a question with an all too obvious answer. "What good is it, ... if a man claims to have faith, but has no deeds?". Our reply is surely, "no good". James wants us to understand that actions and good works are proof of the reality of faith.
Just how can your young people live out their lives in a way that would glorify God? They can pray, even when they don't know how to pray or what to ask. James explains that belief is important. They need to believe in God and pray according to God's will. Then we can trust God to take care of us and our concerns.
In these ways we can all live to glorify God!!