Consistent Teaching

(Pro 6:23 KJV)  For the commandment is a lamp; and the law is light; and reproofs of instruction are the way of life:

There is a tension between two emphasis in the life of the believer.  On the dominant side we have the teaching about grace.  It gives the sovereignty of God first place and makes human will a minor matter.  It is a very comfortable place to be because it really demands nothing from you if you follow it to its logical conclusion.  At the other end you have the expectation that people who believe in Jesus will live an upright and moral life.  This verse is obviously stressing the second, as you would expect in the Old Testament.

The law, standards of behavior and attitude, is lifted up as a guide.  Often people who stress grace will say that is bondage to human effort.  The logical problem you have is that the “reproof” (8433b) mentioned here is also proclaimed as important by the apostle of grace, Paul,

(2Ti 3:16 KJV)  All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:

Both testaments make use of this word and concept.  If your behavior is not vital, why the emphasis?

So?  If you love Jesus it will show up in your life.  As much as some want to make it, it is not an option.