All major cults attack true Christianity in three main areas. First is authority. They will refuse to submit to the full authority of the Bible and often will try to tear down the Bible or, like the Jehovah’s Witnesses, will make someone other than the individual reader the one who really decides what the Bible teaches. In the case of the JW’s, the Watchtower Bible and Tract Society alone provides the correct interpretation of the Scriptures and must not be questioned.
Does the Bible teach that Jesus Christ our Lord is truly God? Consider the following passages of Scripture and I encourage you to memorize these passages to memory to quote to cults when you engage them with the true gospel.