Abraham, the "first believer," in particular. As an inherited trait, emunah is always present in every Jewish soul, though not necessarily conscious.
It is the function of the soul of Moses (present in every generation) to sustain and reinforce the consciousness of the faith of Israel, and hence Jewish identity, through the food of Torah wisdom. In the merit of Moses, manna was given to Israel. Its first appearance in Torah reads "man hu," which permutes into the word "emunah."
