Although it is a popular contemporary belief to state that there are three Abrahamic faiths, in actuality, the Bible does not contain any instruction to enter into a religion called Judaism or Christianity. Noah عليه السلام, Abraham عليه السلام, Ishmael عليه السلام, Isaac عليه السلام and Jacob عليه السلام came before the words Judaism and Christianity even existed.
"Abraham was neither a Jew nor a Christian, but he was Haneefan Muslimaa [an upright monotheist who submitted himself to Allaah], and he was not of those who associated partners with Allaah in worship." (3:67)
For this reason, the One who sent Abraham عليه السلام as a prophet addressed those who would dispute this matter, saying: