last certainty of its absolute truth and essentiality. The doctrine of immortality is the final doctrine of religion; its testament, in which it declares its last wishes. Here therefore it speaks out undisguisedly what it has hitherto suppressed. If elsewhere the religious soul concerns itself with the existence of another being, here it openly considers only its own existence; if elsewhere in religion man makes his existence dependent on the existence of God, he here makes the reality of God dependent on his own reality; and thus what elsewhere is a primitive, immediate truth to him, is here a derivative, secondary truth: if I am not immortal, God is not God; if there is no immortality, there is no God;--a conclusion already drawn by the Apostle Paul. If we do not rise again, then Christ is not risen, and all is vain. Let us eat and drink. It is certainly possible to do away with what is apparently or really objectionable in the popular argumentation, by avoiding the inferential form; but this can only be done by making immortality an analytic instead of a synthetic truth, so as to show that the very idea of God as absolute personality or subjectivity is per se the idea of immortality. God is the guarantee of my future existence, because he is already the certainty and reality of my present existence, my salvation, my trust, my shield from the forces of the external world; hence I need not expressly deduce immortality, or prove it as a separate truth, for if I have God, I have immortality also. Thus it was with the more profound Christian mystics; to them the idea of immortality was involved in the idea of God; God was their immortal life,--God himself their subjective blessedness: he was for them, for their consciousness, what he is in himself, that is, in the essence of religion. Thus it is shown that God is heaven; that the two are identical. It would have been easier to prove the converse, namely, that heaven is the true God of men. As man conceives his heaven, so he conceives his God; the content of his idea of heaven is the content of his idea of God, only that what in God is a mere sketch, a concept, is in heaven depicted and developed in the colours and forms of the senses. Heaven is therefore the key to the deepest mysteries of religion. As heaven is objectively the displayed nature of God, so subjectively it is the most candid declaration of the inmost thoughts and dispositions of religion. For this reason, religions are as various as are the kingdoms of heaven, and there are as many different kingdoms of heaven as there are characteristic differences among men. The Christians themselves have very heterogeneous conceptions of heaven. [143]