Christ, are baptized in Christ. Therefore they
all put on Christ: and this is to receive the effect of Baptism.
Consequently insincerity does not hinder the effect of Baptism.

Obj. 2: Further, the Divine power which can change man's will to that
which is better, works in Baptism. But the effect of the efficient
cause cannot be hindered by that which can be removed by that cause.
Therefore insincerity cannot hinder the effect of Baptism.

Obj. 3: Further, the effect of Baptism is grace, to which sin is in
opposition. But many other sins are more grievous than insincerity,
which are not said to hinder the effect of Baptism. Therefore neither
does insincerity.

_On the contrary,_ It is written (Wis. 1:5): "The Holy Spirit of
discipline will flee from the deceitful." But the effect of Baptism
is from the Holy Ghost. Therefore insincerity hinders the effect of
Baptism.

_I answer that,_ As Damascene says (De Fide Orth. ii), "God does not
compel man to be righteous." Consequently in order that a man be
justified by Baptism, his will must needs embrace both Baptism and
the baptismal effect. Now, a man is said to be insincere by reason of
his will being in contradiction with either Baptism or its effect.
For, according to Augustine (De Bapt. cont. Donat. vii), a man is
said to be insincere, in four ways: first, because he does not
believe, whereas Baptism is the sacrament of Faith; secondly, through
scorning the sacrament itself; thirdly, through observing a rite
which differs from that prescribed by the Church in conferring the
sacrament; fourthly, through approaching the sacrament without
devotion. Wherefore it is manifest that insincerity hinders the
effect of Baptism.

Reply Obj. 1: "To be baptized in Christ," may be taken in two ways.
First, "in Christ," i.e. "in conformity with Christ." And thus
whoever is baptized in Christ so as to be conformed to Him by Faith
and Charity, puts on Christ by grace. Secondly, a man is said to be
baptized in Christ, in so far as he receives Christ's sacrament. And
thus all put on Christ, through being configured to Him by the
character, but not through being conformed to Him by grace.

Reply Obj. 2: When God changes man's will from evil to good, man does
not approach with insincerity. But God does not always do this. Nor
is this the purpose of the sacrament, that an insincere man be made
sincere; but that he who comes in sincerity, be justified.

Reply Obj. 3: A man is said to be