Vocabulary:  ze,w,,,,,, zhlwth,j,, zhlo,w,, zhleu,w, zh/loj,, zesto,j = (literally) to boil, to be hot, = (positively or negatively) fervent, ardent, zealous, jealous, indignant, wrath, envious, spite.

Negative:

Gal. 1:14, Zealous religious unbelievers.  Also Acts 5:17, 13:45, 17:5, 22:3, Gal.
                  4:17-18, Rom. 10:2, and Phil. 3:6.
Jas. 3:14, 16, An envious way of life.  Also Jas. 4:2, 1 Cor. 3:3, Rom. 13:13, Gal. 5:20,
                       and 2 Co. 12:20.
Rev. 3:15-16, Spiritual luke-warm (versus refreshing hot or cold) makes God want to
                        vomit.  See 3:17-19.

Positive:

Jn. 2:17, Jesus was zealous for proper use of the temple.
Acts 18:25, Apollos’ fervent positive spiritual volition.  Compare Rom. 12:11.
Tit. 2:14; Believers, zealous of good deeds.
1 Pet. 3:13, Zeal overcomes suffering and victimization.  See 3:14-17.
2 Co. 11:2, Paul was zealous and jealous that the Corinthians continue their spiritual
                    advance.  Note 1 Corinthians 14:12.
2 Co. 7:7, 11, 9:2; Zeal and Corinthian improvement.
Rev. 3:19, Those whom I love, I reprove and discipline; be zealous therefore, and
                   repent.