I am not sure you recognize why Mormonism is wrong.

"Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, [and] to keep himself unspotted from the world" (James 1.27).

The Bible says not only is there this good religion, but there is also bad religion.

"If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion [is] vain" (1.26).