the mind > mental capacity > belief > belief, trust, confidence > act of convincing, conviction > [noun] > power to convince (3)
Power to convince; credibility, credit, convincing authority. Obsolete.
esp. Power to convince or persuade the reason or judgement; convincing or appealing power. Often in of (great,etc.) force; †formerly also of force…
figurative. Conviction, power to compel assent.