What is the ruling on a Muslim man marrying a Christian woman who believes in the One God and is chaste, but does not practice the teachings of her religion, and has doubts about Paradise and Hell, then her faith increased when she read about Islam, but she has not yet pronounced the Two Testimonies? And what is the ruling on the marriage contract if she pronounces the Two Testimonies, but does not adhere to all the rulings of Islamic law?

Your marriage is valid if you married a chaste woman from the People of the Book. If she embraces Islam, she remains married to you and there is no need to renew the contract. The phrase mentioned means that a woman from the People of the Book who pronounces the two testimonies (Shahadatayn) and then refuses to adhere to the rulings of Islam after learning them, is not considered a Muslim by judgment, but her marriage does not become invalid. She is not considered an apostate in this case, unlike someone who knows the rulings before pronouncing the Shahadatayn and then apostatizes. It is recommended to strive diligently in inviting her to Islam.