How did Judaism and Christianity originate after Islam, which Abraham (peace be upon him) followed, and are they religions or messages, and what will their followers answer when asked about their religion in their graves?

Islam is the religion that Allah chose for humanity, and whoever seeks a religion other than it will be among the losers. Allah has described the prophets and their followers with it, such as Abraham, Jacob and his children, Moses, Jesus, Noah, Solomon, Lot, the disciples, and the sorcerers of Pharaoh.

Islam is submission to Allah and worshipping Him alone. It is the religion of all prophets, even if their laws differed in the branches. The Islam brought by Muhammad, peace be upon him, is an extension of Allah's religion and abrogates what came before it. No religion other than it is accepted from anyone after his prophethood.

The names "Jews" and "Christians" are attributed to Judah and the city of Nazareth or al-Nasra. Judaism and Christianity were valid heavenly religions before their distortion.

Regarding the grave interrogation, there are several opinions: that it is specific to this Ummah, or general to all nations, or to remain silent on the matter. Ibn al-Qayyim favors the opinion that it is general. So, whoever died before the prophethood of Prophet Muhammad, peace be upon him, among the Jews and Christians, will be questioned about their religion that their messengers brought to them. As for after the prophethood of Prophet Muhammad, peace be upon him, no religion is accepted except Islam, and no one who dies after his prophethood and the reach of his call will be questioned except about Islam.