12 Therefore I urge you, brothers, by the mercies of God, to present your bodies a living sacrifice, holy, acceptable to God, which is your spiritual service. 2 Don’t be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what is the good, well-pleasing, and perfect will of God.
St. Irenaeus: demonstrations of the apostolic preaching
Now, since man is a living being compounded of soul and flesh, he must needs exist by both of these: and, whereas from both of them offences come, purity of the flesh is the restraining abstinence from all shameful things and all unrighteous deeds, and purity of the soul is the keeping faith towards God entire, neither adding thereto nor diminishing therefrom. For godliness is obscured and dulled by the soiling and the staining of the flesh, and is broken and polluted and no more entire, if falsehood enter into the soul: but it will keep itself in its beauty and its measure, when truth is constant in the soul and purity in the flesh. For what profit is it to know the truth in words, and to pollute the flesh and perform the works of evil? Or what profit can purity of the flesh bring, if truth be not in the soul? For these rejoice with one another, and are united and allied to bring man face to face with God.
3 For I say through the grace that was given me, to everyone who is among you, not to think of yourself more highly than you ought to think; but to think reasonably, as God has apportioned to each person a measure of faith. 4 For even as we have many members in one body, and all the members don’t have the same function, 5 so we, who are many, are one body in Christ, and individually members of one another, 6 having gifts differing according to the grace that was given to us: if prophecy, let’s prophesy according to the proportion of our faith; 7 or service, let’s give ourselves to service; or he who teaches, to his teaching; 8 or he who exhorts, to his exhorting; he who gives, let him do it with generosity; he who rules, with diligence; he who shows mercy, with cheerfulness.
Ignatius to the Ephesians
Wherefore it is fitting that ye should run together in accordance with the will of your bishop, which thing also ye do. For your justly renowned presbytery, worthy of God, is fitted as exactly to the bishop as the strings are to the harp. Therefore in your concord and harmonious love, Jesus Christ is sung. And do ye, man by man, become a choir, that being harmonious in love, and taking up the song of God in unison, ye may with one voice sing to the Father through Jesus Christ, so that He may both hear you, and perceive by your works that ye are indeed the members of His Son. It is profitable, therefore, that you should live in an unblameable unity, that thus ye may always enjoy communion with God.
9 Let love be without hypocrisy. Abhor that which is evil. Cling to that which is good. 10 In love of the brothers be tenderly affectionate to one another; in honor prefer one another, 11 not lagging in diligence, fervent in spirit, serving the Lord, 12 rejoicing in hope, enduring in troubles, continuing steadfastly in prayer, 13 contributing to the needs of the saints, and given to hospitality.
14 Bless those who persecute you; bless, and don’t curse. 15 Rejoice with those who rejoice. Weep with those who weep. 16 Be of the same mind one toward another. Don’t set your mind on high things, but associate with the humble. Don’t be wise in your own conceits. 17 Repay no one evil for evil. Respect what is honorable in the sight of all men. 18 If it is possible, as much as it is up to you, be at peace with all men. 19 Don’t seek revenge yourselves, beloved, but give place to God’s wrath. For it is written, “Vengeance belongs to me; I will repay, says the Lord.” 20 Therefore
“If your enemy is hungry, feed him.
If he is thirsty, give him a drink;
for in doing so, you will heap coals of fire on his head.”
21 Don’t be overcome by evil, but overcome evil with good.