'Bearing Witness' in the Bible

And having removed him he raised up to them David for king, of whom also bearing witness he said, I have found David, the son of Jesse, a man after my heart, who shall do all my will.

A good while, therefore, tarried they, using boldness of speech in dependence upon the Lord, who was bearing witness unto his word of favour, granting signs and wonders to be coming to pass through their hands.