That ye would confirm your love toward him - You do love him, notwithstanding the reproach he has brought on the Gospel; and notwithstanding your love to him, ye were obliged to cut him off for the credit of the Gospel. Now that he has repented, I beseech you to confirm, κυρωσαι, to ratify, by a public act of the Church, your love to him; give him the fullest proof that you do love him; by forgiving him and restoring him to his place in the Church.

that.

Galatians 5:13 For, brothers, you have been called to liberty; only use not liberty for an occasion to the flesh, but by love serve one another.

Galatians 6:1,2,10 Brothers, if a man be overtaken in a fault, you which are spiritual, restore such an one in the spirit of meekness...

Jude 1:22,23 And of some have compassion, making a difference...

"But if Ye have Bitter Envying," &C.
James iii. 14.--"But if ye have bitter envying," &c. The cunning of Satan, and the deceitfulness of our own hearts, are such that when a grosser temptation will not prevail with conscience in some measure enlightened, then they transform themselves into angels of light, and deal more subtilely with us. And there is no greater subtilty of Satan, nor no stronger self deceit, than this, to palliate and cover vices with the shadow of virtue, and to present corruptions under the similitude of graces. …
Hugh Binning—The Works of the Rev. Hugh Binning

Letter Xlv (Circa A. D. 1120) to a Youth Named Fulk, who Afterwards was Archdeacon of Langres
To a Youth Named Fulk, Who Afterwards Was Archdeacon of Langres He gravely warns Fulk, a Canon Regular, whom an uncle had by persuasions and promises drawn back to the world, to obey God and be faithful to Him rather than to his uncle. To the honourable young man Fulk, Brother Bernard, a sinner, wishes such joy in youth as in old age he will not regret. 1. I do not wonder at your surprise; I should wonder if you were not suprised [sic] that I should write to you, a countryman to a citizen, a monk …
Saint Bernard of Clairvaux—Some Letters of Saint Bernard, Abbot of Clairvaux

A Book for Boys and Girls Or, Temporal Things Spritualized.
by John Bunyan, Licensed and entered according to order. London: Printed for, and sold by, R. Tookey, at his Printing House in St. Christopher's Court, in Threadneedle Street, behind the Royal Exchange, 1701. Advertisement by the Editor. Some degree of mystery hangs over these Divine Emblems for children, and many years' diligent researches have not enabled me completely to solve it. That they were written by Bunyan, there cannot be the slightest doubt. 'Manner and matter, too, are all his own.'[1] …
John Bunyan—The Works of John Bunyan Volumes 1-3