Charles Spurgeon Commentary Romans 6:18

"and being made free from sin, ye became servants of righteousness." — Romans 6:18 (ASV)

Being then made free from sin, ye became the servants of righteousness.

The fetters are struck off, the lusts of the flesh do not hold us any longer. We are the Lord's free men, and out of gratitude for this glorious freedom, we become the willing servants of the righteous God.