Yeshua (Jesus) tells us!!
“And He said to them, “The Sabbath was made for man, and not man for the Sabbath. “Therefore the Son of Man is also Lord of the Sabbath.”
The word Sabbath comes from the word Shabbat. Sabbath refers to the day of rest. Hence, Shabbat is a day for us to rest and Yeshua is the key element to a rest given on this day.
We know from the Tenach that the Sabbath day was celebrated prior to the giving of the Ten Commandments.
Then he said to them, “This is what the LORD has said: ‘Tomorrow is a Sabbath rest, a holy Sabbath to the LORD. Bake what you will bake today, and boil what you will boil; and lay up for yourselves all that remains, to be kept until morning.
Since the creation, the Sabbath was a special day and celebrated as such since the days of Adam, Noah, and Abraham. Later, the Israelites were once again reminded of this special day when given the Ten Commandments.
Remember the Sabbath Day and keep it holy. (Exodus 20:8)
Yeshua (Jesus) celebrated the Sabbath.
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.
The apostle Paul kept the Sabbath day as well as mentioned in Acts 18:4.
And he reasoned in the synagogue every Sabbath, and persuaded the Jews and the Greeks.
Isaiah prophesied the Sabbaths will be kept in Millennium.
For as the new heavens and the new earth
Which I will make shall remain before Me,” says the LORD,
“So shall your descendants and your name remain.
And it shall come to pass
That from one New Moon to another,
And from one Sabbath to another,
All flesh shall come to worship before Me,” says the LORD.
Ezekiel mentions in verse 46:1 that the future temple will be closed during the six days and open on the seventh.
Thus saith the Lord GOD; The gate of the inner court that looketh toward the east shall be shut the six working days; but on the Sabbath it shall be opened, and in the day of the new moon it shall be opened.
In conclusion, we celebrate Shabbat based on the blessing of God, sanctification by God, and biblical examples given by God for the relationship we can have with Him by keeping this day separate.