Charles Taze Russell founded his religious sect on his own interpretation of the Bible and gleaned from the teachings of Seventh-Day Adventism and Christadelphianism.
The organization is called the Watchtower Bible and Tract Society and its central publication is The Watchtower magazine which alone is able to to reveal the true meaning of the Bible.
JW theology teaches divine guidance comes only and exclusively through its Watchtower Society and that orthodox Christianity is a false, apostate religion of Satan.
The JW Jesus was created by God as Michael the Archangel who became the mortal Jesus and no longer an angel, but at his death was improved, recreated, into the immortal version of Archangel Michael. They do not believe in the resurrection of Jesus Christ, the central belief of Bible believing Christians.