Legit Christian rappers?

Ok so here's wassup. I'm helpin w/ the youth at my church. This boy in 5th grade tells me his favorite rapper is Waka Flocka. He said he likes him, Lil Wayne, and you know the typical others. I want to make a cd for this kid of rappers that are legit, and are also hardcore Christians. I wanna help get him into some music that still sounds straight, but has a good message too. Any ideas would be greatly appreciated. You know, also stuff that I might enjoy myself. All about rap for this kid guys. I have a great opportunity to do something awesome for this kid and I wanna make it happen, but I really need yalls help. God bless.