If you go to Gary videos, you can find out about a famous evangelist who had a word from God that ET is not true.
http://en.wikipedia.org/wiki/Carlton_Pearson
Pearson's "Gospel of Inclusion" is not Biblical UR, tho.
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While we, at Tentmaker Ministries are glad Carlton Pearson has abandoned the traditional belief that most people are going to endlessly burn in Hell, we do not hold to some key positions which seem to come from Carlton Pearson's teachings. We do NOT believe all mankind is presently "saved." At present, our Father is calling out a people among the Gentiles to be joined with a people called out of Israel of old who will become a many-membered Body of Christ who will one day set all creation free from its bondage to corruption. To enter Christ's Body, one must be born from above. Most people will NOT be born from above in this lifetime, they will be called by the Word of God, Jesus at a later time. But as sure as Jesus is both the Lord of the living AND THE DEAD and as sure as He has the keys to both Death and Hell/hades, all of those who died in Adam (which is all humanity) will be made alive in Christ. The grave does not stop He who has all power and authority. When Jesus' enemies are destroyed, the last one being death, then Jesus will gather all mankind and deliver it to God the Father that our Father may be "all in all." (1 Cor. 15:22-28)
We do not believe members of other religions are "saved" at this time. Salvation, which is much more than life after death, comes only through Jesus. Salvation, in the Hebrew sense (not in the traditional Evangelical sense) means to make whole, to heal, to restore, to deliver. Salvation should be just as much our possession on this side of the grave as on the other. We, who have been given salvation should be sharing that salvation through the fruit in our lives by being joined to Christ. We should be ministering to the lost through the gifts of the Holy Spirit He has deposited in us. We should be the salt of the earth, we should be its light. If God wanted to save the entire planet today, He easily could. But He has a plan. In that plan, salvation is extended to people in an order, that order extends beyond our present age. We also believe in evangelism. People come to Christ through the gospel, through preaching the death, burial and resurrection of Jesus Christ. If one believes everyone is already saved, there is no point in sharing the gospel. We believe this is a mistake. We also believe that as one sows, so shall they reap. There is a liberality among those who teach the Doctrine of Inclusion which violates a whole host of Scriptures dealing with restraining the body with its lusts. Some teach there is no more such thing as sin. We believe in Holiness, not necessarily the Holiness Pentecostal form of heavy legalism, but we believe God holds us accountable to living a moral and orderly life." - Gary Amirault, Tentmaker Ministries