'Testimony' in the Bible

The dragon grew angry with the woman, and went away to make war with the rest of her seed, who keep God's commandments and hold Jesus' testimony.

After these things I looked, and the temple of the tabernacle of the testimony in heaven was opened.

I fell down before his feet to worship him. He said to me, "Look! Don't do it! I am a fellow bondservant with you and with your brothers who hold the testimony of Jesus. Worship God, for the testimony of Jesus is the Spirit of Prophecy."

I saw thrones, and they sat on them, and judgment was given to them. I saw the souls of those who had been beheaded for the testimony of Jesus, and for the word of God, and such as didn't worship the beast nor his image, and didn't receive the mark on their forehead and on their hand. They lived, and reigned with Christ for a thousand years.