In order to connect what has already been laid down with what still remains to be said, it is necessary to acknowledge the existence on earth of some true religion, or form of Divine worship. Religion, or worship, signifies the due honour paid to God, as to the universal Principle, Ruler, and End of all things. Every effect turns naturally to its cause; submits itself to its cause, in order to become like to it; and, in a certain sense, invokes the protection of its cause. By acting thus, the effect is paying honour and worship to its cause. Now, as man is the effect of God, there must be in his nature an instinct prompting him to turn to God, to become subject to Him, to resemble Him, and to invoke Him, in order from Him to obtain beatitude. As no natural inclination is given us in vain, these promptings must spring from religion; and they are proofs that some true form of Divine worship exists in the world.
This fact is, again, proved on another count. Man is possessed of reason and of free will. Now, as reason is fallible on many points, especially in Divine matters, it follows that, if God had not revealed some true form of worship, we should have gone astray, as did the heathen before the advent of Christ, and should never have attained beatitude. Thus, our natural instinct would have misled us, and the Providence of God would have failed us, in a matter most closely pertaining to our salvation.
It is clear that a natural tendency to religion is innate in the heart of man, from the fact that some form, though frequently an erroneous form, of Divine worship has existed through all generations. If, then, there be no possibility of satisfying this natural inclination, God has provided better for the needs of irrational creatures than for those of man.
It is the property of a cause to infuse its goodness and perfection into its effect, in order that this effect may, as far as is possible, resemble the cause. God, who is the Supreme Good and the First Cause of all things, desires, more earnestly than does any other cause, to infuse His goodness into man in order to bring him to beatitude; and, as the perfection of man consists in that interior homage whereby he subjects himself to God, it is clear, that God cannot have made this interior homage impossible, and that, in other words, some true religion exists in the world.