Yep know you are mixed up Jesus says there are two great Commandments of LOVE. One to God and the other to mankind. Paul is talking of our duty of LOVE to our neighbor. There are two great commandments not one only and ON THESE TWO GREAT COMMANDMENTS HANG ALL THE LAW AND THE PROPHETS.
Matthew 22
36, Master, which is the great commandment in the law?
37, Jesus said to him, You shall love the Lord your God with all your heart, and with all your soul, and with all your mind.
38, This is the first and great commandment.
39, And the second is like to it, You shall love your neighbor as yourself.
40, ON THESE TWO COMMANDMENTS HANG ALL THE LAW AND THE PROPHETS.
If your interpretation of the scriptures was correct you are free to have other God's, use God's name in vain, make idols and break God's Sabbath. Yet all through the OLD and NEW Testament scriptures God says that breaking these Commandments are SIN.
SIN will keep all who practice it out of God's KINGDOM. Only God's Word is true and we should BELIEVE and FOLLOW IT.
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God's 4th commandment is one of the ten (Exodus 20:8-11) If we knowingly break it when God asks us not to we stand guilty before God of committing sin (James 2:8-12). If we do not seek him in repentance and forgiveness we are in danger of the Judgement (Hebrews 10:26-27)
Sunday worship is a tradition and teaching of man that has lead many to break the commandments of God. Jesus says that if we follow the traditions of man that break the commandments of God we are not following God (Matthew 15:3-9)
There is not one scripture in all of God's Word that says that God's 4th Commandment is now ABOLISHED and we are now commanded to KEEP Sunday as a Holy day.
Who should we follow the teachings and traditions of men or the Word of God? Who should we believe the Words of men or the Word of God?
In times of ignorance God winks at but now ,<when a KNOWLEDGE of the truth has come> calls all men everywhere to REPENT (FOLLOW) (Acts 17:30-31).