The Sabbath Day

Exodus 31:15 You have six days each week for your ordinary work, but the seventh day must be a Sabbath day of complete rest, a holy day dedicated to the Lord. Anyone who works on the Sabbath must be put to death. 16 The people of Israel must keep the Sabbath day by observing it from generation to generation. This is a covenant obligation for all time. 17 It is a permanent sign of my covenant with the people of Israel. For in six days the Lord made heaven and earth, but on the seventh day he stopped working and was refreshed.’”

Hebrews 4:4 We know it is ready because of the place in the Scriptures where it mentions the seventh day: “On the seventh day God rested from all his work.” 5 But in the other passage God said, “They will never enter my place of rest.” 6 So God’s rest is there for people to enter, but those who first heard this good news failed to enter because they disobeyed God. 7 So God set another time for entering his rest, and that time is today. God announced this through David much later in the words already quoted: “Today when you hear his voice, don’t harden your hearts.”

Mark 2:23 One Sabbath day as Jesus was walking through some grainfields, his disciples began breaking off heads of grain to eat. 24 But the Pharisees said to Jesus, “Look, why are they breaking the law by harvesting grain on the Sabbath?”
25 Jesus said to them, “Haven’t you ever read in the Scriptures what David did when he and his companions were hungry? 26 He went into the house of God (during the days when Abiathar was high priest) and broke the law by eating the sacred loaves of bread that only the priests are allowed to eat. He also gave some to his companions.”
27 Then Jesus said to them, “The Sabbath was made to meet the needs of people, and not people to meet the requirements of the Sabbath. 28 So the Son of Man is Lord, even over the Sabbath!”