Verses with the word testify in the New Testament (15 verses):

Luke 16:28
For I have five brethren; that he may testify unto them, lest they also come into this place of torment.

John 2:25
And needed not that any should testify of man: for he knew what was in man.

John 3:11
Verily, verily, I say unto thee, We speak that we do know, and testify that we have seen; and ye receive not our witness.

John 5:39
Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.

John 7:7
The world cannot hate you; but me it hateth, because I testify of it, that the works thereof are evil.

John 15:26
But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:

Acts 2:40
And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.

Acts 10:42
And he commanded us to preach unto the people, and to testify that it is he which was ordained of God to be the Judge of quick and dead.

Acts 20:24
But none of these things move me, neither count I my life dear unto myself, so that I might finish my course with joy, and the ministry, which I have received of the Lord Jesus, to testify the gospel of the grace of God.

Acts 26:5
Which knew me from the beginning, if they would testify, that after the most straitest sect of our religion I lived a Pharisee.

Galatians 5:3
For I testify again to every man that is circumcised, that he is a debtor to do the whole law.

Ephesians 4:17
This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind,

1 John 4:14
And we have seen and do testify that the Father sent the Son to be the Saviour of the world.

Revelation 22:16
I Jesus have sent mine angel to testify unto you these things in the churches. I am the root and the offspring of David, and the bright and morning star.

Revelation 22:18
For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book: