The letter still remains, but we are not to live our lives in fear of the letter of that law. If we walk in the Spirit and in love, we will automatically fulfill that law and need not be concerned with the letter of it. If we transgress any of these commandments, we are not walking in true love. This brings us to the question of whether or not the Sabbath is moral or ceremonial. Just as baptism goes so much deeper than a mere outward physical ceremony, so, too, the Sabbath goes so much deeper than a mere day of rest.
Love is the highest type of morality.
Yahshua said the two greatest commandments were to love Yahweh with all your heart . . . So if love of Yahweh and our neighbors is the framework upon which all the law and prophets hang, then love is the underlying reason for every prophecy, every law, every commandment, etc. Every bit of instruction ever issued by Yahweh has love as its motivational beginning, including the Sabbath. Obedience to the Sabbath is not only an expression of love towards our Heavenly Father, but His giving of the Sabbath to man is an expression of love and mercy towards man. In His mercy and love towards us, He knew man would need a day of rest.