The fourth piece in the Christian’s panoply… is the shield of faith. Justifying faith. A grace that makes him the devils match… not a naked assent to the truths of the gospel [but] an act of the soul whereby it rests on Christ crucified for pardon and life, and that upon the warrant of [God's] promise. Faith is… a shield intended for the defense of the whole body… Sometimes temptation is levelled at the head… against this truth and that, to make the Christian call them into question… blot out the Deity of Christ, with other mysterious truths of the Gospel… Now faith comes between the Christian and this arrow. It comes into the relief of the Christian’s weak understanding. —William Gurnall