As much as we can...But willingly, not as a debt...Not as a requirment for salvation...But because God has put it in our hearts to want to do so...
And if we fail, which we always do, we do not require a sacrifice as those did under the 10 Commandments...We have already received the Sacrifice...Once for all...
I have always thought that Jesus requires obedience as a requirement for salvation:
17 ¶ And when he was gone forth into the way, there came one running, and kneeled to him, and asked him, Good Master, what shall I do that I may inherit eternal life?18 And Jesus said unto him, Why callest thou me good? there is none good but one, that is, God.
19 Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Defraud not, Honor thy father and mother.
20 And he answered and said unto him, Master, all these have I observed from my youth.
21 Then Jesus beholding him loved him, and said unto him, One thing thou lackest: go thy way, sell whatsoever thou hast, and give to the poor, and thou shalt have treasure in heaven: and come, take up the cross, and follow me.
22 And he was sad at that saying, and went away grieved: for he had great possessions. (Mark 10:17–22)
It appears to me that not only must we obey the Ten Commandments to inherit eternal life; we are also called to "take up the cross" and follow Jesus.
Am I missing something?
I agree. But we can do a lot with the spirit of Christ indwelling. We can overcome a myriad of sins and shortcomings by letting his spirit lead. But NOT trying, not overcoming, is tantamount to rejecting, not following, the spirit of Christ.