John Wesley on 1 Samuel 12:22

His name's sake - That is, for his own honour, which would suffer much among men, if he should not preserve and deliver his people in eminent dangers. And this reason God alledgeth to take them off from all conceit of their own merit; and to assure them, that if they did truly repent of all their sins, and serve God with all their heart; yet even in that case their salvation would not be due to their merits; but the effect of God's free mercy. To make - Out of his own free grace, without any desert of yours, and therefore he will not forsake you, except you thrust him away.