Shall not they teach thee, and tell thee, and utter words out of their heart?
Teach thee - Job (Job 6:24) had said, "Teach me." Bildad, therefore, says, Since you want teaching, Enquire of the Fathers; They will teach thee.
Utter words - more than mere speaking: 'put forth well-considered words.'
Out of their heart - from observation and reflection. Not merely from their mouth (Job 8:2; Job 15:13), such as Bildad insinuates were Job's words. Job 8:11-13 embody, in poetic and sententious form (probably the fragment of an old poem), the observation of the elders.