Revelation 22:18-19
I testify to every one that hears the words of the prophecy of this book: if any one add to these things, God will add to him the plagues that are written in this book.
Acts 2:40
And with many other words did he testify and exhort, saying: Save yourselves from this wicked generation.
Acts 20:21
bearing full testimony both to Jews and to Greeks, of the repentance that leads to God, and of the faith that leads to our Lord Jesus Christ.
Galatians 5:3
I testify indeed again to every man that is circumcised, that he is bound to do the whole law.
Ephesians 4:17
This I say, therefore, and appeal to you solemnly in the Lord, that you no longer walk as the other Gentiles walk, in the error of their minds,
1 Thessalonians 4:6
That no one take advantage of or injure his brother in this matter; because the Lord takes vengeance for all such things, as we also told you before, and fully testified: