1 Timothy 1:8

But we know that the law is good, if a man use it lawfully;

But - "Now we know" (; ): as an admitted principle.

Law is good - accordant with God's moral goodness.

If a man - primarily, a teacher; then, every Christian.

Use it lawfully - in its lawful place in the Gospel economy; namely, not as a means of a "righteous man" attaining higher perfection than by the Gospel alone () (the perverted use to which the false teachers put it, appending fabulous interpretations of it to the Gospel), but to awaken the sense of sin in the ungodly (1 Timothy 1:9: cf. Romans 7:7; ).