I think the graphic from the Four Spiritual Laws got it right:
Faith is layered: notitia, assensus, fiducia. Knowledge (content), assent (it's true), fiducia (trust).
As always, "the Heidelberg" is pithy and clear: "True faith is not only a certain knowledge, whereby I hold for truth all that God has revealed to us in his word, but also an assured confidence, which the Holy Ghost works by the gospel in my heart; that not only to others, but to me also, remission of sin, everlasting righteousness and salvation, are freely given by God, merely of grace, only for the sake of Christ's merits. "