Revelation 22:18-19
I warn everyone who hears the words of the prophecy of this book: if anyone adds to them, God will add to him the plagues described in this book,
Acts 2:40
And he testified with many other words and exhorted them, saying, "Save yourselves from this perverse generation."
Acts 20:21
testifying both to Jews and to Greeks of repentance toward God and faith in our Lord Jesus Christ.
Galatians 5:3
I testify again to every man who receives circumcision, that he is under obligation to keep the whole Law.
Ephesians 4:17
Now this I affirm and testify in the Lord, that you must no longer live as the Gentiles do, in the futility of their minds,
1 Thessalonians 4:6
and that no man transgress and wrong his brother in this matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.