Reply Obj. 2: As Augustine says in his book on Charity (Ep. Joan. ad Parth. iii), "no man is born of water and the Holy Ghost unwillingly which is to be understood not of little children but of adults." In like manner we are to understand as applying to adults, that man "without himself is not justified by Christ." Moreover, if little children who are about to be baptized resist as much as they can, "this is not imputed to them, since so little do they know what they do, that they seem not to do it at all": as Augustine says in a book on the Presence of God, addressed to Dardanus (Ep. clxxxvii).
Reply Obj. 3: As Augustine says (Serm. clxxvi): "Mother Church lends other feet to the little children that they may come; another heart that they may believe; another tongue that they may confess." So that children believe, not by their own act, but by the faith of the Church, which is applied to them: by the power of which faith, grace and virtues are bestowed on them.
Reply Obj. 4: The carnal intention of those who take children to be baptized does not hurt the latter, as neither does one's sin hurt another, unless he consent. Hence Augustine says in his letter to Boniface (Ep. xcviii): "Be not disturbed because some bring children to be baptized, not in the hope that they may be born again to eternal life by the spiritual grace, but because they think it to be a remedy whereby they may preserve or recover health. For they are not deprived of regeneration, through not being brought for this intention." _______________________
SEVENTH ARTICLE [III, Q. 69, Art. 7]
Whether the Effect of Baptism Is to Open the Gates of the Heavenly
Kingdom?
Objection 1: It seems that it is not the effect of Baptism, to open the gates of the heavenly kingdom. For what is already opened needs no opening. But the gates of the heavenly kingdom were opened by Christ's Passion: hence it is written (Apoc. 4:1): "After these things I looked and behold (a great) door was opened in heaven." Therefore it is not the effect of Baptism, to open the gates of the heavenly kingdom.
Obj. 2: Further, Baptism has had its effects ever since it was instituted. But some were baptized with Christ's Baptism, before His Passion, according to John 3:22, 26: and if they had died then, the gates of the heavenly kingdom would not have been opened to them, since none entered therein before Christ, according to Mic. 2:13: "He went up [Vulg.: 'shall go up'] that shall open the way before them." Therefore it is not the effect of Baptism, to open the gates of the heavenly kingdom.
Obj. 3: Further, the baptized are still subject to death and the other penalties of the present life, as stated above (A. 3). But entrance to the heavenly kingdom is opened to none that are subject to punishment: as is clear in regard to those who are in purgatory. Therefore it is not the effect of Baptism, to open the gates of the heavenly kingdom.
On the contrary, on Luke 3:21, "Heaven was opened," the gloss of Bede says: "We see here the power of Baptism; from which when a man comes forth, the gates of the heavenly kingdom are opened unto him."
I answer that, To open the gates of the heavenly kingdom is to remove the obstacle that prevents one from entering therein. Now this obstacle is guilt and the debt of punishment. But it has been shown above (AA. 1, 2) that all guilt and also all debt of punishment are taken away by Baptism. It follows, therefore, that the effect of Baptism is to open the gates of the heavenly kingdom.