That's right, we aren't told he was baptized. We also aren't told he was not yet you speculate he wasnt.First, we are not told that he was baptized, and second, how could he have been baptized whilst hanging on a cross?
Did the thief hang on the cross His entire life?
We don't know anything about his life before the cross.
All we know is he was a thief and the Romans chose to punish him for it with crucifixion.
Do we know how long he lived as a thief? No.
Do we know why he stole? No.
Do we know his reasoning for stealing? No.
Do we know if he he only stole once or multiple times? No.
Yes he sinned as we all do. His heart wasn't right as all of us do sin against God.Also, I would say that it was because he new he didn't have a good heart which is why he needed to repent, and needed a Saviour.
But just like folks who have fallen but repent because they love God, he did the same.
I stop condemning people of their sin when they repent of it.
Too many continue to condemn others of their sins even after they repent.
Repentance is a CHANGE of heart.
Not every gospel says he mocked Jesus.As I said before, both he and his fellow-thief had mocked Jesus on the cross to start with. Mocking the Saviour doesn't result from having a good heart.
Matthew and Mark but not Luke.
I'm not sure he did.
The Bible uses figures of speech just as we do in all languages today.
The books that do say they mocked Jesus could be using a figure of speech known as Synecdoche.
Its possible Matthew and Mark used the plural in place of the singular in their accounts of the thieves reviling Christ.
Heres another example of a plural used for a singular.
Genesis 8:4 indicates Noah's ark rested on the mountains of Ararat.
Did Noah's ark rest on one of the mountains of Ararat or did it rest on all of them?
Noah's ark was huge but obviously was not large enough to rest on all the mountains of Ararat.
It rested on one.
Genesis 21:7 Sarah asked, Who would have said to Abraham that Sarah would nurse children
Sarah nursed a son.
We cannot be dogmatic and say both or only one thief mocked Jesus.
Good, let us both put it into practice.Lastly, I love your quote from Psalm 19