Thanks !! But What was the original purpose according to Numbers 8: 21?

If God Says that He has a given the Tithes to the Priests; Why are some Christians Angry when the Priests uses the tithe as their own as commanded by scripture. Why Must they express anger if priests used their God Given entitlement to buy " Private Jets" ? Are Good Things Which Comes from God Reserved for the SINNERS and Parishioners to the Exclution of the Priests??