'That Which Is Good' in the Bible

Then did that which is good become death to me? it could not be so: but sin, that it may appear sin, through the good was working out death to me, in order that sin may be exceedingly sinful through the commandment.

Let each of us please his neighbor in that which is good, unto edification;

For your obedience has come abroad unto all men: therefore I rejoice over you, and wish you to be wise in that which is good, and uncompromising towards that which is evil.