Well, since the thief on the cross was brought up in an earlier post as evidence against the position held by Traditional Catholics that **Water ** baptism is an absolute necessity, then lets take a look at what the Catechism says…
*"The Catechism of Trent
Baptism Made Obligatory After Christ’s Resurrection
The second period to be distinguished, that is, the time when the law of Baptism was made, also admits of no doubt. Holy writers are unanimous in saying that after the Resurrection of our Lord* , when He gave to His Apostles the command to go and teach all nations: baptising them in the name of the Father, and of the Son, and of the Holy Ghost, the law of Baptism became obligatory on all who were to be saved.
This is inferred from the authority of the Prince of the Apostles when he says: Who hath regenerated us into a lively hope, by the resurrection of Jesus Christ from the dead;’ and also from what Paul says of the Church: He delivered himself up for it: that he might sanctify it, cleansing it by the laver of water in the word of life. By both Apostles the obligation of Baptism seems to be referred to the time which followed the death of our Lord. Hence we can have no doubt that the words of the Saviour: Unless a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God, refer also to the same time which was to follow after His Passion."
The thief on the cross, St. Dismas, is an absolutely beautiful - and extremely moving - picture of the surpassing power of grace, contrition, faith, and charity, but when St. Dismas is used as an example to counter the “Feeneyites” on the necessity of **Water ** baptism (I am talking the ordinary means of the sacrament), that example is really irrelevant, if only in a temporal sense - because we do live in time.
The Church says in plain terms, the law being posited against the thief’s example did not begin until after the thief had died. That’s a pretty conclusive argument against the thief on the cross being used as an example against the “Feeneyite” position on Water baptism… Therefore using the thief, St. Dismas, as an example just does not prove the “Feeneyites” are wrong, and doesn’t get any of you far in the argument because of what the Church has said about when the “law of Water baptism became obligatory.”