There are thousands of Christians who move heaven and earth to bring the word of God to those of the other faiths. Well, It would have had been simple to tell one and all from the heavens that the Bible is the only truth and that none of you should believe anything else. God can use powerful electronic devices to reach one and all. To overcome the question of the time difference, well, the westerners have already heard about the Bible. (Of course it is another thing that they would be moved more when they hear from the Almighty Himself from the heavens) The remaining are the gentiles of the other faiths. May be He can set His instruments somewhere at the centre of Asia and Africa and proclaim the word of God at the required decibel so that nobody misses the same. It is really a shame that in all these years people have not been convinced of the eternal truths! There are still millions of Buddhists, Hindus, Confucians, Jains, Sikhs and those of the other minor religions who do not believe!.
The problem of the hundreds of the warring Christian denominations will still remain unresolved. They have all heard about the word of God. But there a number of differences over which they continuously fight. God gets a golden opportunity to set things right here and now and set his devices so that the true word of god is beamed all the time. All the confusion will just melt away and all can follow the word of God in its entirety.