Romans 12:11

English Standard Version

11 Do not be slothful in zeal, be fervent in spirit,[1] serve the Lord. (Ac 18:25; Ac 20:19)

New International Version

11 Never be lacking in zeal, but keep your spiritual fervor, serving the Lord.

New Int. Readers Version

11 Never let the fire in your heart go out. Keep it alive. Serve the Lord.

King James Version

11 Not slothful in business; fervent in spirit; serving the Lord;