Verses with the word fervent in the New Testament (7 verses):

Acts 18:25
This man was instructed in the way of the Lord; and being fervent in the spirit, he spake and taught diligently the things of the Lord, knowing only the baptism of John.

Romans 12:11
Not slothful in business; fervent in spirit; serving the Lord;

2 Corinthians 7:7
And not by his coming only, but by the consolation wherewith he was comforted in you, when he told us your earnest desire, your mourning, your fervent mind toward me; so that I rejoiced the more.

James 5:16
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.

1 Peter 4:8
And above all things have fervent charity among yourselves: for charity shall cover the multitude of sins.

2 Peter 3:10
But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.

2 Peter 3:12
Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?