2 Kings 10:16
And he said, Come with me, and thou shalt see my zeal for the LORD. So they had him ride in his chariot.
So we laboured in the work, and half of them held the spears from the rising of the morning until the stars appeared.
My zeal has consumed me, because my enemies have forgotten thy words.
For Zion's sake I will not hold my peace; and for Jerusalem's sake I will not rest until her righteousness goes forth as brightness and her saving health is lit as a flaming torch.
And I said, I will not make mention of him, nor speak any more in his name. But he was in my heart as a burning fire and within my bones; I tried to forbear, and I could not.
Return to thine own house and tell what great things God has done unto thee. And he went, preaching throughout the whole city what great things Jesus had done unto him.
This man was instructed in the way of the Lord; and being fervent in the spirit, he spoke and taught diligently the things of the Lord, teaching only in the baptism of John.
2 Corinthians 9:2
For I know your ready desire, for which I gloried of you to those of Macedonia, that Achaia was ready a year ago, and your zeal has provoked many.
For I bear witness of him, that he has a great zeal for you and those that are in Laodicea and those in Hierapolis.
1 Thessalonians 2:9
For ye remember, brethren, our labour and travail, for labouring night and day, not to be a burden unto any of you, we preached among you the gospel of God.