We read much in scripture about zeal. In Psalm 69, David speaks of the zeal of God consuming him despite all the calamities that were being inflicted upon him. Psalm 119 finds the author literally worn out by his zeal; he is exhausted by a righteous anger over those who have forsaken the teachings of the Lord. In the New Testament, Paul writes in Galatians that it is good to be zealous for the right things (Galatians 4:18).
The book of Titus states that God’s people will be zealous to do good works. Finally, in the book of Revelation, Jesus Himself tells us to be zealous and repent. Different versions of the Bible translate the word zealous as earnest, eager or committed. The point is that we should diligently strive to do the good works that Christ has given us to do.