If the Christ of a Mormon is not the one true God (John 17:3) who is eternal (John 1:1; Hebrews 1:8-12; 5:6; 13:8), the object of worship is a creature and worship itself becomes idolatry. If the Christ of a Mormon is a spirit-child who has been procreated -- like countless other spirit children by the flesh-and-bone Father and one of his wives -- then he is not uniquely of the same nature as the Father, as Bible and the historic church teach. If the [Mormon] Christ is our finite brother, not different in kind from us, he is therefore not uniquely Immanuel -- "God with us" (Matthew 1:23). The Christ of the Bible is the unique God-man -- incarnate, crucified, and risen once-for-all. Only if He was infinite God in human flesh could His blood have infinite value for the justification of all the billions of people who have ever sinned.
Gordon Lewis, cited by Ron Rhodes in, The Culting of America, p.94.