Genesis 3:21 (c) We usually use these coats of skins to represent the imputed righteousness of GOD which is given to us through the death of the Lord JESUS CHRIST. The animal died so that the skins could be used for clothing. Just as human babies are born with no clothes and must obtain clothing from an outside source so new babes in CHRIST have no garment of their own, but must receive the garment of salvation, the robe of righteousness from GOD through faith in JESUS CHRIST. This truth is illustrated in Matthew 22:11-12.
Job 30:18 (c) The disease which Job had, which was probably elephantiasis, fastened itself upon his body tenaciously and clung to him as a garment.