Bits of Torah Truths – Paul taught about marriage & divorce using the Torah – Episode 70
ב הָאִשָּׁה הַנְּשׂוּאָה קְשׁוּרָה לְבַעֲלָהּ עַל–יְדֵי הַתּוֹרָה כָּל עוֹד הוּא חַי, אַךְ אִם יָמוּת בַּעֲלָהּ פְּטוּרָה הִיא מֵחֹק הַתּוֹרָה הַקּוֹשֵׁר אוֹתָהּ לְבַעֲלָהּ.
2 For the woman which hath an husband is bound by the law to her husband so long as he liveth; but if the husband be dead, she is loosed from the law of her husband. (KJV)
Here in the book of Romans Paul explicitly mentions the Torah according to Romans 7:2. Paul taught the laws of marriage & divorce using the Torah from Devarim / Deuteronomy 24. The Torah has not passed away.