Mt 12:8, Mk 2:28, Mk 1:21, 6:2, Lk 4:16,31, Lk 6:5,6,9, Lk 13:10, 15-16, Lk 14:3-5
In the Old Testament, God gave the people of Israel the Sabbath. (Ex 31:13)
Ex 31:13 Speak thou also unto the children of Israel, saying, Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the Lord that doth sanctify you.
Jesus is the Lord of the Sabbath. (Mt 12:8, Mark 2:28)
Mt 12:8 For the Son of man is Lord even of the sabbath day.
Mark 2:28 Therefore the Son of man is Lord also of the sabbath.
Jesus went to the synagogue on the Sabbath, and he opened the Old Testament and revealed that he was the Christ. (Mark 1:21, Mark 6:2, Luke 4:16,31)
Mark 1:21 And they went into Capernaum; and straightway on the sabbath day he entered into the synagogue, and taught.
Mark 6:2 And when the sabbath day was come, he began to teach in the synagogue: and many hearing him were astonished, saying, From whence hath this man these things? and what wisdom is this which is given unto him, that even such mighty works are wrought by his hands?
Luke 4:16 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. 31 And came down to Capernaum, a city of Galilee, and taught them on the sabbath days.
On the Sabbath day Jesus proclaimed the gospel that He was the Christ and also saved people's lives. (Luke 6:5-6,9, Luke 13:10,15-16, Luke 14:3-5)
Luke 6:5 And he said unto them, That the Son of man is Lord also of the sabbath. 6 And it came to pass also on another sabbath, that he entered into the synagogue and taught: and there was a man whose right hand was withered. 9 Then said Jesus unto them, I will ask you one thing; Is it lawful on the sabbath days to do good, or to do evil? to save life, or to destroy it?
Luke 13:10 And he was teaching in one of the synagogues on the sabbath. 15 The Lord then answered him, and said, Thou hypocrite, doth not each one of you on the sabbath loose his ox or his ass from the stall, and lead him away to watering? 16 And ought not this woman, being a daughter of Abraham, whom Satan hath bound, lo, these eighteen years, be loosed from this bond on the sabbath day?
Luke 14:3 And Jesus answering spake unto the lawyers and Pharisees, saying, Is it lawful to heal on the sabbath day? 4 And they held their peace. And he took him, and healed him, and let him go; 5 And answered them, saying, Which of you shall have an ass or an ox fallen into a pit, and will not straightway pull him out on the sabbath day?