It is a snare to the man who devoureth that which is holy,.... Which is separated to sacred uses, is devoted to the Lord, as firstfruits, tithes, offerings, &c. which if a man converts to his own use is sacrilege, and this is a sin and a snare, and brings ruin on him; see Mal 3:8; and after vows to make inquiry: that is a sin and a snare also; a man should first inquire before he vows, whether it is right for him to make a vow, and whether he is able to keep it; it is too late after the vow is made to inquire about the lawfulness or expedience of it, and how to find out ways and means to dissolve it and be clear of it; for it is better not to vow, than to vow and not pay, Ecc 5:4; when a thing is in a man's own hands, he may do what he will; but when he has devoted it to another use, it is no longer in his power; as the case of Ananias and Sapphira shows, Act 5:1.