S2E1: Did Jesus Actually Rank the Ten Commandments?

The Bible teaches that the Law of God is perfect just and righteous. And all the Ten Commandments are a transcript of God's loving character. However, is there any ranking among the Commandments? What was Jesus teaching when He said in Mark 12 " And you shall love the LORD your God with all your heart, with all your soul, with all your mind, and with all your strength." This is the first commandment. And the second, like it, is this: You shall love your neighbor as yourself? What lessons can we learn from this with regards to the keeping of the seventh day Sabbath as given in the fourth commandment?