Strong's: as a moral quality
Thayer's: upright, honorable
Vine's: in a moral sense
I don't really know how to discuss this other than to say we need to be "good." Obviously this means we cannot be involved in things that are considered bad or sinful like the "works of the flesh" listed in Galatians 5:19-21. Rather we should be producing the fruit of the Spirit (Galatians 5:22, 23).
May we continually strive grow in goodness each and everyday.