I think the sperm makes a person a sinner and every one has a mother and father. Mary didn't have a male to get her pregnant. Jesus isn't a sinner nor He sins. So He is permitted to do what He wants like the things you listed. I think the commandments even though no man has ever kept them nor will ever keep them, show Gods character. It is to show that no man can be like God. This make totally depravity right. Everyone else want to make totally depravity wrong and claim they keep the commanment themselves and end up boasting to the point that it makes them sick inviting illnesses that kills them.
I've long struggled with Jesus saying that the one who breaks the least of the commandments and teaches others to do so is least in the Kingdom of Heaven. In light of Him doing what He did, didn't He at least break the letter of the Law?
I think this illustrates the utter impossibility of meeting the standard of righteousness the Law requires. Rather than being a set of do's and don'ts (which it is!), it is an integrated whole that is woven together to present a single, unified picture of righteousness. Man, however, looks at the single laws on their own and tries to rip them from the fabric that they were meant to exist in. Do that and it really isn't the same law. As Jesus pointed out, if I fail to save someone from dying on the Sabbath, have I really done something good?
Jesus presents a picture of the whole Law being fulfilled without contradiction or tearing that "fabric" that the Law weaves. But knowing we can't attain that righteousness, we are covered in clothes that we didn't make - garments of righteousness, so to speak. While Jesus fulfilled the Law, it is realized in those who are His. Thus, a true, born again child of God will know when they are violating that command (remembering it exists as part of a larger whole) because they have the Spirit of God convicting them and the example of Christ to showing them (by the same Spirit) what a fulfilled sabbath looks like.
Then again, we also read in Hebrews that the sabbath itself is also a type and shadow of some greater thing - entering into rest in Christ.
But that's a whole different topic...