Sabbath in Hebrew is a beautiful and profound word. One way of looking at this word is as the combination of the basic elements of two shorter words: return and home also very meaningful words in the Hebrew language.
The word for return, which also means to turn, has tremendous ancient temple significance as it expresses the return journey away from sin, from the most eastward point of the tabernacle or temple, the altar of burnt offerings, towards the holy of holies--or the home of God in the temple, the most westward point of the tabernacle or temple. Turning and returning is the process of repenting and approaching God through His grace. The word for home or house is also very meaningful and is found in many words such as Bethlehem, in which it is the first syllable in this word that means house of bread.
The word Sabbath, the Sabbath day, and all the other manifestations of the Sabbath such as the completion of the creation, the Sabbatical and Jubilee years, and the millennial reign of Christ highlight the ancient temple pattern objective, which is to turn towards God, leave the world behind, and return home to Him and receive eternal lives, all through obedience to the principles and ordinances of the gospel of Jesus Christ and through the mercy and grace He provides through His atoning sacrifice. The Sabbath is a weekly opportunity to make this journey spiritually to the extent we are willing, and further to prepare ourselves eventually to return permanently home into God's presence.
Homes in this world are central to our purpose in life and are ideally a type of our past and future heavenly home. Homes are ideally places to return for refuge, liberty, refreshment, reconciliation, support, and love, particularly on the Sabbath day, just as anciently the people return home on the Sabbath from their fields and other activities. The word for home or house in Hebrew is more connected with people and particularly with family than with a physical structure, as for instance the house of Israel refers to the descendants of Israel. When we return home we return to our people, to our family, and most importantly both in this world and in the next we have the opportunity to return to our God to abide, rest, and commune. As we truly return to Him God will receive us to a greater and greater degree until we receive a fullness with and of Him.
Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him. John 14:23
This is the purpose of the Sabbath.