Al-Baqarah 2:138 صبغة الله ومن احسن من الله صبغة ونحن له عابدون ١٣٨

Allah said, if they, the disbelievers among the People of the Book and other disbelievers, believe in all of Allah's Books and Messengers and do not differentiate between any of them,

(then they are rightly guided) meaning, they would acquire the truth and be directed to it.