We should know that the Supreme Personality of Godhead is one without a second. He is the same God for the Christians, for the Muslims, for the Hindus, and for all others. There are not different Gods. He is the same God, the same Buddha, the same Christ. Just as there is one Sun and one Moon for the whole world, similarly, there are not different Gods for different people. How can God be divided? There should not be more than one God, otherwise all the gods will quarrel over territory and position. There is only one God, but He appears according to the vision of the devotee.
There is only one God, but He appears to be many because the ignorant devotees seem to have divided Him up by their different languages.
Srila Gurudeva, March 10, 2002 Malaysia