Which gentiles embraced Jewish theology, worship, and morality but did not fully convert to Judaism by being circumcised and following the Jewish dietary laws?

Answer: God fearers.

Explanation:

God fearers are asking known as God worshippers, they are regarded as gentiles sympathizers to the Hellenistic Judaism in the Greco Roman society, they agreed and also observed some Jewish religious rite and traditions but they are not full Judaism converts. This is similar to the Hebrew Bible convert.