You cannot gain it for yourself because you are it.

The real reason for your dependence on God and your belief in his existence is because you know that you are a part of him. 

You know you are a part of him.

The knowledge is only just a flicker of light in your mind, and you do not know much about it and understand less, but it is a dim shadowy remembrance carried down from all the ages of your history, and the fact that you are a little bit of God, split off from him, so-to-speak, in the beginning of time and sent to earth to live in a material body and slowly evolve and finally work back to union with the Greatest One himself, but with mighty individuality and continuing to work and create and mature through all eternity. 

Now and again, there are souls on earth who realise this colossal man―

The ideal man, and spend their earth-lives striving to attain the highest. 

These are great souls, and to them will be given the choice at the end of their earth lives to go on to the highest heaven or to return once more to earth to help struggling humanity.

The truth of your dependence on God is applied to all nations, not only to Christians of the Western world. 

Every nation has its conception of God because no nation can reach up to anything beyond its capability. 

And, of course, with that innate belief in the existence of God is also the knowledge of your own immortality. 

You cannot be immortal at one end only―it must be at both. 

Some people have taught that immortality is a thing to be gained for you by the death of Jesus of Nazareth on the Cross. 

That is wrong. 

You are immortal from the very beginning, being part of God who is the essence of immortality. 

No one can gain it for you―

You cannot gain it for yourself because you are it.