'Testifying' in the Bible

Also with many more other words he was testifying and exhorting, saying, 'Be saved from this perverse generation;'

And [after] removing him, he raised up David for their king, about whom he also said, testifying, 'I have found David the [son] of Jesse [to be] a man in accordance with my heart, who will carry out all my will.'

long time, indeed, therefore, did they abide speaking boldly in the Lord, who is testifying to the word of His grace, and granting signs and wonders to come to pass through their hands.

And when both Silas and Timotheus came down from Macedonia, Paul was pressed in the Spirit, testifying fully to the Jews Jesus the Christ;

Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.

But I don't place any value on my life, if only I can finish my race and the ministry that I received from the Lord Jesus of testifying to the gospel of God's grace.

So, having obtained help from God, I stand to this day testifying both to small and great, stating nothing but what the Prophets and Moses said was going to take place;

and having appointed him a day, they came, more of them unto him, to the lodging, to whom he was expounding, testifying fully the reign of God, persuading them also of the things concerning Jesus, both from the law of Moses, and the prophets, from morning till evening,