The cup of blessing which we bless, isn’t it a sharing of the blood of Christ? The bread which we break, isn’t it a sharing of the body of Christ? Because there is one loaf of bread, we, who are many, are one body; for we all partake of the one loaf of bread. — 1 Corinthians 10:16

Jesus therefore said to them, “Most certainly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you don’t have life in yourselves. He who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. For my flesh is food indeed, and my blood is drink indeed. He who eats my flesh and drinks my blood lives in me, and I in him. — John 6:53

Now to him who is able to keep them from stumbling, and to present you faultless before the presence of his glory in great joy, — Jude 1:24

For this cause I also suffer these things. Yet I am not ashamed, for I know him whom I have believed, and I am persuaded that he is able to guard that which I have committed to him against that day. — 2 Timothy 1:12

being confident of this very thing, that he who began a good work in you will complete it until the day of Jesus Christ. — Philippians 1:6

Therefore whoever eats this bread or drinks the Lord’s cup in a way unworthy of the Lord will be guilty of the body and the blood of the Lord. But let a man examine himself, and so let him eat of the bread, and drink of the cup. For he who eats and drinks in an unworthy way eats and drinks judgment to himself, if he doesn’t discern the Lord’s body. — 1 Corinthians 11:27

How much worse punishment do you think he will be judged worthy of who has trodden under foot the Son of God, and has counted the blood of the covenant with which he was sanctified an unholy thing, and has insulted the Spirit of grace? — Hebrews 10:29

“But you profane it, in that you say, ‘Yahweh’s table is polluted, and its fruit, even its food, is contemptible.’ — Malachi 1:12