Remember them that are in bonds, as bound with them; and them which suffer adversity, as being yourselves also in the body. Remember them that are in bonds - He appears to refer to those Christian's who were suffering imprisonment for the testimony of Jesus.
As bound with them - Feel for them as you would wish others to feel for you were you in their circumstances, knowing that, being in the body, you are liable to the same evils, and may be called to suffer in the same way for the same cause.