Jehovah's Witnesses and salvation
Jehovah's Witnesses believe salvation is a free gift from God attained by being part of "God's organization" and putting faith in Jesus' ransom sacrifice. They do not believe in predestination or eternal security. They believe in different forms of resurrection for two groups of Christians. One group, the anointed, go to heaven while the other group, "the other sheep" or "the great crowd" will live forever on earth.
Basis
Jehovah's Witnesses teach that salvation is possible only through Christ’s ransom sacrifice and that individuals cannot be saved until they repent of their sins and call on the name of Jehovah. Salvation is described as a free gift from God, but is said to be unattainable without good works that are prompted by faith. The works prove faith is genuine. Preaching is said to be one of the works necessary for salvation, both of themselves and those to whom they preach. They believe that people can be "saved" by identifying God's organization and serving God as a part of it.