'Zealous' in the Bible

and they having heard, were glorifying the Lord. They said also to him, 'Thou seest, brother, how many myriads there are of Jews who have believed, and all are zealous of the law,

'I, indeed, am a man, a Jew, having been born in Tarsus of Cilicia, and brought up in this city at the feet of Gamaliel, having been taught according to the exactitude of a law of the fathers, being zealous of God, as all ye are to-day.