10:11-15 There is a practice in the East, of charming serpents by music. The babbler's tongue is an unruly evil, full of deadly poison; and contradiction only makes it the more violent. We must find the way to keep him gentle. But by rash, unprincipled, or slanderous talk, he brings open or secret vengeance upon himself. Would we duly consider our own ignorance as to future events, it would cut off many idle words which we foolishly multiply. Fools toil a great deal to no purpose. They do not understand the plainest things, such as the entrance into a great city. But it is the excellency of the way to the heavenly city, that it is a high-way, in which the simplest wayfaring men shall not err, Isa 25:8. But sinful folly makes men miss that only way to happiness.

15. labour … wearieth—(Isa 55:2; Hab 2:13).

knoweth not how to go to the city—proverb for ignorance of the most ordinary matters (Ec 10:3); spiritually, the heavenly city (Ps 107:7; Mt 7:13, 14). Maurer connects Ec 10:15 with the following verses. The labor (vexation) caused by the foolish (injurious princes, Ec 10:4-7) harasses him who "knows not how to go to the city," to ingratiate himself with them there. English Version is simpler.