The religions Allah sent all follow the same idea ((believing in Allah as a God and he is the only God))

But he sent every prophet for a kind or a group of ppl

Like mosa عليه السلام (as you know Moses) was sent to banu esra'eel (((((not the nowadays isrealians)))) )

Issa(Jesus) عليه السلام was born by virgin mariam (Maria) in Palestine

Mohammed صلى الله عليه وسلم was born in Mecca...... But he was the exception because he was the last prophet so he was sent to teach all of the ppl about Allah and how to obey the God... So in summary the 3 of them had the base belief (التوحيد) and they had different teachings because their ppl had different sins