What is the level of the importance of 1 John 3:23, John 13:34, and Revelations 14:12 to our salvation?

No, while they are important and explain a huge part of living as a Christ Follower, the commandments are very distinct and exact. What a lot of people seem to misunderstand that the "LAW" (Ten Commandments) is still in effect so to speak, God's grace and Jesus' atonement for sin give us the strength to keep the Law, while before Christ, hearts were too hard and people became depended on the Law instead of God. The Law in addition to faith and relationship with Christ sum up all that you are asking.