1 Timothy 1:8

I own that the law is good, if a man make a right use of it:

Romans 7:16

if then I do what I in my mind am against, the consent of my mind is, that the law is right.

Romans 7:12-13

wherefore the law is holy; and the commandment holy, and just, and good.

Romans 7:18

for I experience, that in the carnal part of me dwells no good: for it is familiar to me, to will, but not to execute that which is good.

Romans 7:22

for my mind takes delight in the law of God,

Romans 12:2

and be not conformed to the present age: but be ye transformed by the renewing of your mind, that you may perceive what God requires of you is good, and acceptable, and perfect.

Galatians 3:21

Is the law then opposite to the promises? by no means. for if there had been a law given, which could have given life, certainly justification should have been by the law.

2 Timothy 2:5

a combatant does not receive the crown, unless he has observ'd the laws of the games.

Treasury of Scripture Knowledge

Summary

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

Lawfully

Bible References

The law

Romans 7:12
wherefore the law is holy; and the commandment holy, and just, and good.
Romans 12:2
and be not conformed to the present age: but be ye transformed by the renewing of your mind, that you may perceive what God requires of you is good, and acceptable, and perfect.
Galatians 3:21
Is the law then opposite to the promises? by no means. for if there had been a law given, which could have given life, certainly justification should have been by the law.

Lawfully

2 Timothy 2:5
a combatant does not receive the crown, unless he has observ'd the laws of the games.