Though “The Church of Jesus Christ of Latter Day Saints” might wish to omit the latter part of their name for false appearances and to mislead, and do indeed use Christian terminology, speaking of God, Jesus, salvation, etc., they are not Christian, nor are their doctrines and practices Christian in any way, contrary to popularly accepted opinion. Even their abstaining from alcohol and caffeine, as well as their practice of mandatory tithing, are not Christian. These practices and others might have the appearance of piety and holiness, but no ruling body has the authority to establish practices which are neither forbidden or commanded by God, and then declare that such practices have are from God himself
The current climate of our day might seem to preclude any such debate whether Mormons are Christians are not, but such climate reveals the negligence of many within the church (i.e. Joel Osteen) to make proper distinctions. But such distinctions are to be made, even in the public square, and especially within the church.
Such distinctions of doctrine and practice between Mormons (and other groups) and the Christian Church is the distinction of truth from error, Christianity being of the truth and Mormonism (and other groups) being of error. Proper (godly) distinctions are to be made because such distinctions concern God and His Holy Word.
Writing to Timothy, St. Paul says, “Take heed to yourself and to the doctrine. Continue in them, for in doing this you will save both yourself and those who hear you” (1 Timothy 4:16). The doctrine of which Paul speaks is that which is of God, even the saving doctrine of sins forgiven in Christ, the saving doctrine of Jesus, “true man and true God.” Get these wrong, and your immediately outside of Christianity and have no salvation.
Not only here do the Mormons differ with what is of the true doctrine. The Mormons have as their authority, not only The Bible (as it is correctly translated and as they understand it), but The Book of Mormon (which has no historical evidence even to substantiate its claims), The Pearl of Great Price, The Doctrine and the Covenants, and the Leader(s) of their fellowship.
Though Jesus says, “If you abide in My word, you are My disciples indeed. And you shall know the truth, and the truth shall make you free” (John 8:31-32), the Mormons, by their twisting of Holy Scripture and their use of other authorities for their doctrines and practices, they neither do abide in Christ and His Word, nor are they Jesus’ disciples. Therefore, they also do not know the truth, but according to their Father, they speak lies. Mormons are not of God (John 8:42-47).
This must remain clear, lest the ignorant be deceived and the Church further become complacent instead of increasingly more vigilant. Mormons have a different God, Jesus, Savior, salvation, doctrine, fellowship, and authority than the Christian Church, and therefore, contrary to beliefnet and religioustolerance (and others, political or not), Mormons should not be affiliated anywhere in proximity to Christianity or Christian denominations.
It might also be said that many fellowships which claim to be Christian are not consistently so. Any doctrine/teaching which is not of God is also not of the true, Godly doctrine. Therefore, any false teaching mixed with the true teaching is detrimental to the faith. The fact that Christians can be found in erring church bodies (i.e. ELCA, UMC, Episcopal Church, Roman Catholicism, PCUSA, etc.) is not due to the false preaching, teaching, and ungodly practices found there, but only on account of the fraction of God’s Word that may still remain. In spite of numerous errors, where Christ’s Word is at least read, there will be Christ’s church, as little as it might be.
Of course, this is not reason for one to remain in an erring fellowship. This is all the more reason to seek a church which seeks to be faithful to God’s Word in all it preaches, teaches, and does, for the Christian seeks to hear God’s Word and nothing else. The Christian seeks to live according to God’s Word, and therefore, seeks God’s mercy in Christ. Erring fellowships do not offer such comfort and confidence of God’s mercy in Christ. They turn the hearer to another other than Christ alone for help and refuge. Where they do speak the truth, we thank the Lord. Where they do not, we must discern. “Let each one of you speak truth with his neighbor” (Ephesians 4:25).
 Of Latter Day Saints
 Corinthians 5:6-7: “Do you not know that a little leaven leavens the whole lump? Therefore purge out the old leaven, that you may be a new lump, since you truly are unleavened.”