No where in the Bible does Jesus instruct those who love and follow Him that He has changed His Sabbath (the seventh day of the week) to the first day of the week (Sunday) because of His resurrection. Friend, if you believe the Bible to be the Word of God, then I would suggest that you should follow God’s guidance and not man’s. “Then Peter and the other apostles answered and said: ‘We ought to obey God rather than men.’”  Acts 5:29 * *  New King James Version

God’s Law - The Ten Commandments Exodus 20:3-17 New King James Version