Ecclesiastes 5:6

Allow not thy mouth to cause thy (d) flesh to sin; neither say thou before the (e) angel, that it [was] an error: why should God be angry at thy voice, and destroy the work of thy hands?

(d) Do not cause yourself to sin by vowing rashly as they do who make a vow to live unmarried and such like.

(e) That is, before God's messenger when he will examine your doing, as though your ignorance should be a just excuse.