In order to understand why the Holy Catholic Church baptizes infants, the anti-Catholics must accept first that babies are not sinless; otherwise, there would be no room for them to recognize it. The question is: are the babies sinless?
The Holy Catholic Church infallibly teaches that “Revelation gives us the certainty of faith that the whole of human history is marked by the original fault freely committed by our first parents” (CCC 390). But, is this biblical?
In 1 Kings 8:46, it can be read that there is no one who does not sin. Thus, all are sinners including the infants. It reads: “When they sin against you—for there is no one who does not sin—and you become angry with them and give them over to the enemy, who takes them captive to his own land, far away or near.”
This is supported by Ecclesiastes 7:20, which says: “Indeed, there is no one on earth who is righteous, no one who does what is right and never sins.” The truth of this passage cannot be refuted by those who claim sinlessness of infants. Why? Are the babies not human? Are they not on earth? Remember, “there is no one on earth who is righteous.”
Even the great King David understood that he was a sinner against God, even from conception and birth. In Psalms 51:1-5, it reads: “Have mercy on me, O God, according to your unfailing love; according to your great compassion blot out my transgressions. Wash away all my iniquity and cleanse me from my sin. For I know my transgressions, and my sin is always before me. Against you, you only, have I sinned and done what is evil in your sight, so that you are proved right when you speak and justified when you judge. Surely I was sinful at birth, sinful from the time my mother conceived me.”
King David also knew that the wicked go astray from birth, and they are wayward from the womb: “Even from birth the wicked go astray; from the womb they are wayward and speak lies” (Psalm 58:3).
If David knew that he was a sinner even from conception, why then these anti-Catholics failed recognizing the same?
Furthermore, after the Great Flood, and after Noah had built an altar on which he sacrificed clean animals and birds to the Lord, God revealed that men are evil from their childhood. In Genesis 8:20, it reads: “God said in His heart that He never again would curse the ground, even though man was evil from his youth or childhood:” He reinstated it in verse 21: “The LORD smelled the pleasing aroma and said in his heart: ‘Never again will I curse the ground because of man, even though every inclination of his heart is evil from childhood. And never again will I destroy all living creatures, as I have done.'”
Would God the Almighty lie on this? Of course not! God is omniscient and He knows what’s in the heart of men. Are the anti-Catholics omniscient too that they know babies have no sin? Think.
Well, Paul the Apostle reiterated that all are sinners and that righteousness only can come through faith in Jesus Christ. In Romans 3:21-24, it reads: “But now a righteousness from God, apart from law, has been made known, to which the Law and the Prophets testify. This righteousness from God comes through faith in Jesus Christ to all who believe. There is no difference, for all have sinned and fall short of the glory of God, and are justified freely by his grace through the redemption that came by Christ Jesus.”
Finally, Paul reaffirmed that all have sinned and that sin was inherited from Adam, which indicates that men have it from birth: “Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all men, because all sinned—for before the law was given, sin was in the world. But sin is not taken into account when there is no law” (Romans 5:12-13).
Therefore, the Magisterium exhorts that “Because of this certainty of faith, the Church baptizes for the remission of sins even tiny infants who have not committed personal sin” (CCC 403). Remember, the “original sin is called ‘sin’ only in an analogical sense: it is a sin ‘contracted’ and not ‘committed’ — a state and not an act” (CCC 404).