Certainly God "knows all things." First, because He is infinitely wise, and if He were ignorant of anything He would not be so. Secondly, because He is everywhere and sees and hears all. Darkness does not hide from His view, nor noise prevent Him from hearing. How could we sin if we thought of this! God is just here, looking at me and listening to me. Would I do what I am going to do now if I knew my parents, relatives, and friends were watching me? Would I like them to know that I am thinking about things sinful, and preparing to do shameful acts? No! Why then should I feel ashamed to let God see and know of this wicked thought or action? They might know it and yet be unable to harm me, but He, all-powerful, could destroy me instantly. Nay, more; not only will God see and know this evil deed or thought; but, by His gift, the Blessed Mother, the angels and saints will know of it and be ashamed of it before God, and, most of all, my guardian angel will deplore it. Besides, this sin will be revealed to the whole world on the last day, and my friends, relatives, and neighbors will know that I was guilty of it.

19 Q. Can God do all things? A. God can do all things, and nothing is hard or impossible to Him.

20 Q. Is God just, holy, and merciful? A. God is all just, all holy, all merciful, as He is infinitely perfect.

"All just"—that is, most just. "Just" means to give to everyone what belongs to him—to reward if it is merited or to punish if it is deserved. "Holy"—that is, good. "Merciful" means compassionate, forgiving, less exacting than severe justice demands. In a court a just judge is one who listens patiently to all the arguments for and against the prisoner, and then, comparing one with the other, gives the sentence exactly in accordance with the guilt. If he inflicts more or less punishment than the prisoner deserves, or for money or anything else gives an unfair sentence, then he is an unjust judge. The judge might be merciful in this way. The laws say that for the crime of which this prisoner is proved guilty he can be sent to prison for a term not longer than ten years and not shorter than five: that is, for anything between ten and five years. The judge could give him the full ten years that the law allows and be just. But suppose he believed that the prisoner did not know the law and did not intend to be as wicked as he was proved; or that it was his first offense, or that he heard the prisoner's mother, who was old and infirm, pleading for him and saying he was her only support; or other extenuating circumstances that could awaken sympathy: the judge might be merciful and sentence him for the shortest term the law allows. But if the judge dismissed every prisoner, no matter how guilty, without punishment, he would not be a merciful but an unjust judge, who would soon be forced to leave the court. In the same way, God is often merciful to sinners and punishes them less than He could in strict justice. But if He were to allow every sinner to go without any punishment whatsoever—as unbelievers say He should do, by having no Hell for the wicked—then He would not be just. For as God is an Infinite Being, all His perfections must be infinite; that is, He must be as infinitely just as He is infinitely merciful, true, wise, or powerful.

Now He has promised to punish sin; and since He is infinitely true, He must keep His promise.

Lesson 3
ON THE UNITY AND TRINITY OF GOD

"Unity" means to be one, and "Trinity," three in one.

21 Q. Is there but one God? A. Yes; there is but one God.

22 Q. Why can there be but one God? A. There can be but one God because God, being supreme and infinite, cannot have an equal.

"Supreme," that is, the highest. "Equal," when two are equal one has everything the other has. You could say one pen is the equal of another if it is just as nice and will write just as well; one mechanic is the equal of another if he can do the work equally well. Two boys are equal in class if they have exactly the same marks at the end of the month or year. You could not have two persons chief. For example, you could not have two chief generals in an army; two presidents in the nation, or two governors in a state, or two mayors in a city, or two principals in a school, unless they divide equally their power, and then they will be equals and neither of them chief. God cannot divide His power with anyone—so as to give it away entirely—because we say He is infinite, and that means to have all. Others have only the loan of their power from God. Therefore, all power and authority come from God; so that when we disobey our parents or superiors who are placed over us, we disobey God Himself.