Lazarus and the Rich man already happend because Jesus said:  Luke 16:20 And there was a certain beggar

Genesis 25:8-10
And Abraham expired and died in a good old age, old and full [of days]; and was gathered to his peoples. And his sons Isaac and Ishmael buried him in the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, which was opposite to Mamre - the field that Abraham had purchased of the sons of Heth: there was Abraham buried, and Sarah his wife.

"Gathered to his peoples" (Plural!) can not refer to his physical body for Abraham was buried in a strange land, his father Terach was buried in Haran:

Genesis 11:32-12:1

And the days of Terah were two hundred and five years: and Terah died in Haran. Now the LORD had said unto Abram, Get thee out of thy country, and from thy kindred, and from thy father' house, unto a land that I will shew thee

Abraham hardly went to Abraham's bossom when he died, but scripture says, he was gathered to his peoples, his ancestors were no believers, I think this is hard to refute.

A further point, if righteous people went to the good part of hell (Abraham's bossom) before Christ's ressurection as some say, where did righteous people, like Noah e.g., go before Abraham lived?