“And while they were still at table, Jesus took bread, and blessed, and broke it, and gave it to his disciples, saying, Take, eat, this is my body. Then he took a cup, and offered thanks, and gave it to them, saying, Drink, all of you, of this; for this is my blood, of the new testament, shed for many, to the remission of sins.” — Matthew 26:26-28
Proof that Christ instituted one visible Church
“And I tell you that you are Peter, and on this rock I will build My church, and the gates of Hades will not prevail against it. I will give you the keys of the kingdom of heaven. Whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.”
We are justified by faith and works and not by faith alone: James 2:24
Scripture is not the sole authority on the faith, as taught by scripture: “Therefore, brethren, stand fast; and hold the traditions which you have learned, whether by word, or by our epistle.” — 2 Thessalonians 2:15
The 7 Sacraments in the Bible:
Baptism:
“and this water symbolizes baptism that now saves you also—not the removal of dirt from the body but the pledge of a clear conscience toward God. It saves you by the resurrection of Jesus Christ” — 1 Peter 3:21
Annointing of the sick:
“Is anyone among you sick? Let them call the elders of the church to pray over them and anoint them with oil in the name of the Lord. And the prayer offered in faith will make the sick person well; the Lord will raise them up. If they have sinned, they will be forgiven.” — James 5:14-15
Laying of the hands:
“That is why I would remind thee to fan the flame of that special grace which God kindled in thee, when my hands were laid upon thee.” — 2 Timothy 1:6
Marriage: “As for a wife, she is yoked to her husband as long as he lives; if her husband is dead, she is free to marry anyone she will, so long as she marries in the Lord.” — I Corinthians 7:39
Priests forgiving sins in the person of Christ:
“Again Jesus said to them, “Peace be with you. As the Father has sent Me, so also I am sending you.” When He had said this, He breathed on them and said, “Receive the Holy Spirit. If you forgive anyone his sins, they are forgiven; if you withhold forgiveness from anyone, it is withheld.” — John 20:21-23
“And to whom you have pardoned any thing, I also. For, what I have pardoned, if I have pardoned any thing, for your sakes have I done it in the person of Christ.” — 2 Corinthians 2:10
The Most Holy Sacrament of the Eucharist as found in Scripture:
“If anyone eats of this bread, he shall live for ever. And now, what is this bread which I am to give? It is my flesh, given for the life of the world. Then the Jews fell to disputing with one another, How can this man give us his flesh to eat? Whereupon Jesus said to them, Believe me when I tell you this; you can have no life in yourselves, unless you eat the flesh of the Son of Man, and drink his blood. The man who eats my flesh and drinks my blood enjoys eternal life, and I will raise him up at the last day. My flesh is real food, my blood is real drink. He who eats my flesh, and drinks my blood, lives continually in me, and I in him.”
Additional references: 1 Corinthians 10:16-17, 1 Corinthians 11:23-29
The Most Holy Sacrament of the Eucharist as found in early christian writings
ST. IGNATIUS OF ANTIOCH (circa 80-110 A.D)
“… They abstain from the Eucharist and from prayer, because they do not admit that the Eucharist is the flesh of our Savior Jesus Christ, the flesh which suffered for our sins and which the Father, in His graciousness, raised from the dead.” — Letter to the Smyrnaeans, paragraph 6
ST. JUSTIN MARTYR (circa 155-157 A.D)
“This food we call the Eucharist, of which no one is allowed to partake except one who believes that the things we teach are true, and has received the washing for forgiveness of sins and for rebirth, and who lives as Christ handed down to us. For we do not receive these things as common bread or common drink; but as Jesus Christ our Savior being incarnate by God's Word took flesh and blood for our salvation, so also we have been taught that the food consecrated by the Word of prayer which comes from him, from which our flesh and blood are nourished by transformation, is the flesh and blood of that incarnate Jesus.” — First Apology, Ch. 66
Additional sources: therealpresence.org
Attend Mass: masstimes.org
Attend the Traditional Latin Mass: latinmassdir.org
Wherever the bishop shall appear, there let the multitude of the people also be; even as wherever Jesus Christ is, there is the Catholic Church. — St. Ignatius of Antioch, Letter to the Smyrnaeans, Ch 8 (circa 80-110 A.D)