<p>10:10 <i>For with the heart man believes to righteousness, and with the mouth confession is made to salvation</i>- With the heart (mind / brain) man believes unto salvation and not by legal obedience. It is faith which leads to imputed righteousness; but if we really have believed this wondrous truth, then we will confess it with our mouths. We cannot be passive to it. It's not that witnessing to others is a work to be done for salvation; it is rather the inevitable outcome of having believed within the heart that really, I am counted right before God and in Christ I shall live for ever. The early believers clung to the Lord in whom they had believed &quot;with purpose of <i>heart</i>&quot; (Acts 11:23). They that had not heard of the cross of Christ were made to see, understand and therefore believe by Paul's preaching (Rom. 15:21). Our appeals likewise must be to the understanding. See on Acts 11:14; Heb. 11:19.</p>