אמור אל הכהנים בני אהרן ואמרת אליהם
Emor, say; v’amarta, and tell them, is an apparent redundancy. Rashi explains emor, v’amarta as an enjoinment, l’hazhir gedolim al ha’ketanim, that the Kohanim convey this teaching to others; More specifically, adult Kohanim were cautioned (l’hazhir) regarding the children, the young Kohanim, for adults are not permitted to cause children to become contaminated. The commentators, each in his own inimitable manner, explain the idea of l’hazhir gedolim al ha’ketanim. If I may use my writer’s license, I would suggest that l’hazhir, which also means illuminated and cause to shine, is an enjoinment to parents to make their children’s positive achievements…