Zeal in Christian preaching denotes fervent passion and earnest devotion to God's work, balanced by patience and wisdom. Illustrations often contrast the power of persistent, guided effort with the pitfalls of excessive, uncontrolled enthusiasm, emphasizing a zeal that is fervent yet measured (Romans 12:11).
Patient, guided effort achieves success better than forceful, impatient struggle.
Two ships were aground at London Bridge. The proprietors of one sent for a hundred horses, and pulled it to pieces; the proprietors of the other waited for the tide, and with sails and rudder directed it as they pleased. C. Simeon.
It is better to have overflowing zeal than none at all.
An Indian, having heard from a white man some strictures on zeal, replied, "I don't know about having too much zeal; but I think it is better the pot should boil over than not boil at all."