Zophar spoke last, so he could be the youngest among the three. Zophar only spoke twice, the second time is in Job 20.
Zophar accused Job of:
- Talker (v2)
- Job has received less that what he deserved (v6)
- Job is ignorant of the wisdom and power of God, and hinted that he (Zophar) does (v6-7)
- deceitful (v11)
- witless (false,vain) man (12)
Zophar assured that if Job to repent (v13-14) he will receive blessings from God again. (v15-20)