So he lied when He said that Christ was real and rose from the grave?
He can't know that for sure, he wasn't there. That Jesus rose from the grave is called hearsay.
Yes he can. He saw Christ. Multiple times. As did many who were with him. They were eye witnesses.
He was a money digger who was arrested.
What is the difference between Joseph Smith and Brian David Mitchell who kidnapped Elizabeth Smart?
As Immanuel, Mitchell wrote a two-part text which he claimed were Revelations from God, called the "Book of Immanuel David Isaiah" (I & II).[13] The first of these revelations, completed in April 2002, included instructions for Mitchell to marry 7 more wives; God's chastisement of members for rejecting the Book of Mormon and especially the words of Ezra Taft Benson; for loving money and seeking the praise of the world; for ignoring the poor and needy; for failing to testify against secret combinations; and for turning to doctors to cure illness instead of relying on faith, herbs, and fruits.[14]
Brian David Mitchell - Wikipedia, the free encyclopedia