What is Abraham's Bosom?

It is true that Jesus liberated ALL souls in Hell when he spent the 3 days in Hell after his crucifixion. At that time all Souls resided in Abraham's Bosom, then Jesus took the keys of Hell and brought all those souls to Heaven. The men crucified next to him were forgiven also, so was Judas. Jesus was a being that made human spiritual awakening much easier and attainable. This is what happened at crucifixion. So the non-Jews BEFORE Christ were taken to heaven, and then the Gentiles who do not believe in Jesus AFTER Christ are damned, but all the Souls BEFORE Christ were saved. Some deeply religious Christian guy told me this. Though I am not Christian I find this interesting in an intellectual and curious sense.