'Zealous' in the Bible

And they, when they heard it, glorified God; and they said unto him, Thou seest, brother, how many thousands there are among the Jews of them that have believed; and they are all zealous for the law:

I am a Jew, born in Tarsus of Cilicia, but brought up in this city, at the feet of Gamaliel, instructed according to the strict manner of the law of our fathers, being zealous for God, even as ye all are this day: