When we see and hear the suffering of others and respond to that suffering, we are the heads and arms of the bodhisattva. The bodhisattva has more heads and arms than anyone can count!
The compassion of the bodhisattvas does not depend on a creed or belief system. It manifests in the sincere, unselfish and unconditional response to suffering, not in the beliefs and objectives of the giver and receiver of help.