What is justifying faith?

Justifying faith is a saving grace,^[1] wrought in the heart of a sinner by the Spirit ^[2] and word of God,^[3] whereby he, being convinced of his sin and misery, and of the disability in himself and all other creatures to recover him out of his lost condition,^[4] not only assenteth to the truth of the promise of the gospel,^[5] but receiveth and resteth upon Christ and his righteousness, therein held forth, for pardon of sin,^[6] and for the accepting and accounting of his person righteous in the sight of God for salvation.^[7]