Constitutions of the Holy Apostles Book II Let him also be merciful, of a generous and loving temper; for our Lord says: "By this shall all men know that ye are my disciples, if ye love one another."[19] The Second Epistle of Zephyrinus Assist ye, therefore, one another in good faith, and by deed and with a hearty will; nor let any one remove his hand from the help of a brother, since "by this," saith the Lord, "shall all men know that ye are my disciples, if ye have love one to another."[13] The Second Epistle of Pope Fabian Ponder these things, and minister comfort to the brethren in all things; for, as the Truth says in His own person, "By this shall all men know that ye are my disciples, if ye have love one to another."[8]