More thinking about the ten commandments (decalogue).

God makes his will known to each person using 'you' ,which can be singular or plural, referring to the whole nation as well. He uses the pronoun "I". It is God Himself talking to me ( or you)! Through the decalogue God prepares us to become his friends and to live in harmony with others. Far from being abolished with the coming of Christ, they have been amplified. They can be summed up by love 'God and then love others'. In the bible there are two accounts of the decalogue. First in Exodus and then in Deuteronomy, when Moses is recalling what happened. That could be why the Catholic and protestant versions differ slightly. Jesus affirms the old covenant. He does not do away with them but amplifies them "even a man that looks at a woman lustfully is guilty of adultery". These are the core commandments in the bible. They build on the Exodus and were given just three new moons after it (3 months). As the Exodus was the release of the Israelites from slavery so to the decalogue releases us from sin. Most importantly they are part of the theophony. God revealing to us His glory! "The gift of the commandments is the gift of God Himself and His holy will"( Catechism). They reveal the heart of God. He cares. He cares what we do. You matter. It matters how we treat each  other. "I am yours and you are mine" God tells us in the commandments. He has given us his will so we can do His will in everything. (Source Fr Mike Schmitz).