I think a subject like this can be either treated simply, or it can become a deep subject. I’ll try to keep this simple, and as the way I believe it.
We know that the Lord took Moses, before he went to the promised land. We also know, as the Lord said to cornelius, Do not call what the Lord has cleansed unclean.
Without trying to be contreversial, there may be no record of Moses being baptised in the bible, but to say, with all certainty, that he was not baptised, may be an incorrect assumption. Perhaps this is something to think about.
We do know that the bible doesn’t contain all detail about everything that happened in the times of Jesus, and all the doctrines of the old prophets. It is best not to speculate, and as such, I prefer to not draw conclusions about subjects such as this without evidence either way. Having an open mind about the things of the Lord is important, in my mind.
I’ll quote you here: “If people were able to enter the kingdom before Christ ‘paid a ransom for our sins” why was the crucifixion necessary?”
The answer to this is pretty simple.Everyone must be given an equal opportunity to enter the kingdom of Heaven. Just because some did, doesn’t mean all could. Christ paid the ransom so that all men, on the condition of repentance, can enter into the kingdom of God, clean from sin.
Hope this answers your question.