Adam Clarke on Romans 1:26

For this cause God gave them up, etc. - Their system of idolatry necessarily produced all kinds of impurity. How could it be otherwise, when the highest objects of their worship were adulterers, fornicators, and prostitutes of the most infamous kind, such as Jupiter, Apollo, Mars, Venus, etc.? Of the abominable evils with which the apostle charges the Gentiles in this and the following verse I could produce a multitude of proofs from their own writings; but it is needless to make the subject plainer than the apostle has left it.