I. Old Testament
The Longer Ending of Mark – Mark 16:9-20
Now when Jesus was risen early the first day of the week, he appeared first to Mary Magdalene, out of whom he had cast seven devils. And she went and told them that had been with him, as they mourned and wept. And they, when they had heard that he was alive, and had been seen of her, believed not. After that he appeared in another form unto two of them, as they walked, and went into the country. And they went and told it unto the residue: neither believed they them. Afterward he appeared unto the eleven as they sat at meat, and upbraided them with their unbelief and hardness of heart, because they believed not them which had seen him after he was risen. And he said unto them, Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned. And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover. So then after the Lord had spoken unto them, he was received up into heaven, and sat on the right hand of God. And they went forth, and preached every where, the Lord working with them, and confirming the word with signs following. Amen. Mark 16:9-20
Also, towards the conclusion of his Gospel, Mark says: “So then, after the Lord Jesus had spoken to them, He was received up into heaven, and sitteth on the right hand of God” [Mk 16:19]. Irenaeus, Against Heresies, bk. 3, chap. 10.5 (ANF 1.426).
Vincentius of Thibaris said: We know that heretics are worse than Gentiles. If, therefore, being converted, they should wish to come to the Lord, we have assuredly the rule of truth which the Lord by His divine precept commanded to His apostles, saying, “Go ye, lay on hands in my name, expel demons.” [apparently a reference to Mk 16:17, 18]. And in another place: “Go ye and teach the nations, baptizing them in the name of the Father, of the Son, and of the Holy Ghost” [Mt 28:19]. Therefore first of all by imposition of hands in exorcism, secondly by the regeneration of baptism, they may then come to the promise of Christ. Otherwise I think it ought not to be done. Seventh Council of Carthage Under Cyprian (ANF 5.567).
For the Lord says: “Except a man be baptized of water and of the Spirit, he shall by no means enter into the kingdom of heaven” [Jn 3:5]. And again: “He that believeth and is baptized shall be saved; but he that believeth not shall be damned” [Mk 16:16]. Apostolic Constitutions, bk. 6, sec. 3, chap. 15 (ANF 7.457).
“With good reason did He say to all of us together, when we were perfected concerning those gifts which were given from Him by the Spirit: “Now these signs shall follow them that have believed in my name: they shall cast out devils; they shall speak with new tongues; they shall take up serpents; and if they drink any deadly thing, it shall by no means hurt them: they shall lay their hands on the sick, and they shall recover [Mk 16:17, 18].” These gifts were first bestowed on us the apostles when we were about to preach the Gospel to every creature, and afterwards were of necessity afforded to those who had by our means believed; not for the advantage of those who perform them, but for the conviction of the unbelievers, that those whom the word did not persuade, the power of signs might put to shame: for signs are not for us who believe, but for the unbelievers, both for the Jews and Gentiles. For neither is it any profit to us to cast out demons, but to those who are so cleansed by the power of the Lord; as the Lord Himself somewhere instructs us, and shows, saying: “Rejoice ye, not because the spirits are subject unto you; but rejoice, because your names are written in heaven [Lk 10:20].” Since the former is done by His power, but this by our good disposition and diligence, yet (it is manifest) by His assistance. It is not therefore necessary that every one of the faithful should cast out demons, or raise the dead, or speak with tongues; but such a one only who is vouchsafed this gift, for some cause which may be advantage to the salvation of the unbelievers, who are often put to shame, not with the demonstration of the world, but by the power of the signs; that is, such as are worthy of salvation: for all the ungodly are not affected by wonders; and hereof God Himself is a witness, as when He says in the law: “With other tongues will I speak to this people, and with other lips, and yet will they by no means believe [“Isa 28:11; 1 Cor 14:21].” Apostolic Constitutions, bk. 8, sec. 1, chap. 1 (ANF 7.479).
Pericope Adulterae – John 7:53-8:11
Comma Johanneum – 1 John 5:7-8