It is right there between the Trinity and your man made idea of Sola Scriptura.
Seriously read the link I provided that will give you the basis for that. http://www.catholicapologetics.info/modernproblems/currenterrors/bapdesire.htm
You will see it described in Luke 23:39-43
Luk 23:39 And one of the malefactors that were hanged railed on him, saying, Art not thou the Christ? save thyself and us. Luk 23:40 But the other answered, and rebuking him said, Dost thou not even fear God, seeing thou art in the same condemnation? Luk 23:41 And we indeed justly; for we receive the due reward of our deeds: but this man hath done nothing amiss. Luk 23:42 And he said, Jesus, remember me when thou comest in thy kingdom. Luk 23:43 And he said unto him, Verily I say unto thee, Today shalt thou be with me in Paradise.
Also just a suggestion here; Your knee jerk reaction of: "where is that in the Bible?" is wearing a bit thin. Try looking at the links that Salvation and others and I have posted and you might actually learn something about the Church you are attacking.
Furthermore, they don't know scripture despite their colorful invectives.