Are there texts in Christian scriptures that would help a Muslim man wishing to marry a Christian woman respond to her disapproving family?

We apologize for not being able to answer, due to lack of knowledge regarding what is in Christian books, and because they have been distorted. We also warn against looking into them, as the Prophet, peace and blessings be upon him, forbade Umar ibn al-Khattab from doing so. It is advised to marry a righteous Muslim woman to raise children upon Islam, for a Muslim woman is better than a Christian woman who will raise her children upon her own creed.