'Zealous' in the Bible

When they heard it, they glorified God and said, “You see, brother, how many thousands of Jews there are who have believed, and they are all zealous for the law.

He continued, “I am a Jewish man, born in Tarsus of Cilicia but brought up in this city at the feet of Gamaliel and educated according to the strict view of our patriarchal law. Being zealous for God, just as all of you are today,

So also you—since you are zealous for spiritual gifts, seek to excel in building up the church.

I advanced in Judaism beyond many contemporaries among my people, because I was extremely zealous for the traditions of my ancestors.