Bilaam, Abhukkar and the Quraysh

Bilal was not acquired by Abu Bakr until after Islam. Why did he himself not understand what was going on when Jibril came to Manradehirah? He went running to Khadidya saying, what happened? I don't know. And he's a toilet told Jibril, welcome your soul later. I've been waiting the last 35 years for you. Now question arises, okay, well maybe there are some scholars have said, okay, Bilaam, Abhukkar are incorrect details. But then let's accept the rest of the story.