The Sabbath Day was established by the Most High and sanctified (made holy) from the beginning of the creation. The Sabbath Day is observed from the evening of the sixth day (Friday) to the evening of the seventh day (Saturday).

Genesis 2:1-3  Thus the heavens and the earth were finished, and all the host of them.  (2)  And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made.  (3)  And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.

SCRIPTURES CONCERNING THE OBSERVATION OF THE SABBATH DAY

The Heavenly Father commanded us not to work on the Sabbath. It is a day of rest.

Exodus 20:8-11  Remember the sabbath day, to keep it holy.  (9)  Six days shalt thou labour, and do all thy work:  (10)  But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:  (11)  For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it. 

Leviticus 23:32  It shall be unto you a sabbath of rest, and ye shall afflict your souls: in the ninth day of the month at even, from even unto even, shall ye celebrate your sabbath. 

The Most High also commanded us not to kindle a fire for the purpose of cooking on the Sabbath Day.  The food that we eat on the Sabbath should be prepared before the Sabbath Day begins.

Exodus 35:1-3  And Moses gathered all the congregation of the children of Israel together, and said unto them, These are the words which the LORD hath commanded, that ye should do them.  (2)  Six days shall work be done, but on the seventh day there shall be to you an holy day, a sabbath of rest to the LORD: whosoever doeth work therein shall be put to death.  (3)  Ye shall kindle no fire throughout your habitations upon the sabbath day. 

Exodus 16:22-23  And it came to pass, that on the sixth day they gathered twice as much bread, two omers for one man: and all the rulers of the congregation came and told Moses.  (23)  And he said unto them, This is that which the LORD hath said, To morrow is the rest of the holy sabbath unto the LORD: bake that which ye will bake to day, and seethe that ye will seethe; and that which remaineth over lay up for you to be kept until the morning. 

The Heavenly Father commanded us not to buy or sell anything on the Sabbath.

Nehemiah 10:31  And if the people of the land bring ware or any victuals on the sabbath day to sell, that we would not buy it of them on the sabbath, or on the holy day:… 

The Sabbath Day is also a day of fellowship. According to the commandments, this is the time we gather to hear the word of the Lord and receive his instructions.

Leviticus 23:1-3  And the LORD spake unto Moses, saying,  (2)  Speak unto the children of Israel, and say unto them, Concerning the feasts of the LORD, which ye shall proclaim to be holy convocations, even these are my feasts.  (3)  Six days shall work be done: but the seventh day is the sabbath of rest, an holy convocation; ye shall do no work therein: it is the sabbath of the LORD in all your dwellings. 

Luke 4:14-16  And Jesus returned in the power of the Spirit into Galilee: and there went out a fame of him through all the region round about.  (15)  And he taught in their synagogues, being glorified of all.  (16)  And he came to Nazareth, where he had been brought up: and, as his custom was, he went into the synagogue on the sabbath day, and stood up for to read. 

1 John 5:3  For this is the love of God, that we keep his commandments: and his commandments are not grievous.