Adam Clarke on Romans 6:20

Ye were free from righteousness - These two servitudes are incompatible; if we cannot serve God and Mammon, surely we cannot serve Christ and Satan. We must be either sinners or saints; God's servants or the devil's slaves. It cannot be as a good mistaken man has endeavored to sing: - "To good and evil equal bent,

I'm both a devil and a saint."

I know not whether it be possible to paint the utter prevalence of sin in stronger colors than the apostle does here, by saying they were Free from righteousness. It seems tantamount to that expression in Genesis, Gen 6:5, where, speaking of the total degeneracy of the human race, the writer says, Every imagination of the thoughts of his heart was only evil continually. They were all corrupt; they were altogether abominable: there was none that did good; no, not one.