Yeah Luke 4:16 does say according to his custom on the Sabbath he went to the Synagogue and read scripture. It also says the same for Paul and says the same according to his Paul's custom.
This custom, reading from the scriptures on Sabbath came to be the norm for Jews in the Babylonian captivity. Which it was still being kept by the Jews in the first century AD. Even after conversion as exampled by Paul.
Luke 4:16 places Christ in Nazareth when he kept the custom. 16And 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 gospels place him in the synagogue in Galilee as well as in them in Judea. Places him out in a field as well on the sabbath. Jesus kept the Sabbath I agree he kept the law. He also kept the law for where to worship and the synagogue was not the place.
In his encounter with the Samaritan woman she says we worship on this mount, you say we have to worship in Jerusalem. Christ replied back the hour is coming when you won't worship on the mount or in Jerusalem.
Reason I am bringing this up is according to the law at the time of Christ you could only worship God in the Temple in Jerusalem.
Deuteronomy 12:1-14 reads,
1These are the statutes and judgments, which ye shall observe to do in the land, which the LORD God of thy fathers giveth thee to possess it, all the days that ye live upon the earth.
2Ye shall utterly destroy all the places, wherein the nations which ye shall possess served their gods, upon the high mountains, and upon the hills, and under every green tree:
3And ye shall overthrow their altars, and break their pillars, and burn their groves with fire; and ye shall hew down the graven images of their gods, and destroy the names of them out of that place.
4Ye shall not do so unto the LORD your God.
5But unto the place which the LORD your God shall choose out of all your tribes to put his name there, even unto his habitation shall ye seek, and thither thou shalt come:
6And thither ye shall bring your burnt offerings, and your sacrifices, and your tithes, and heave offerings of your hand, and your vows, and your freewill offerings, and the firstlings of your herds and of your flocks:
7And there ye shall eat before the LORD your God, and ye shall rejoice in all that ye put your hand unto, ye and your households, wherein the LORD thy God hath blessed thee.
8Ye shall not do after all the things that we do here this day, every man whatsoever is right in his own eyes.
9For ye are not as yet come to the rest and to the inheritance, which the LORD your God giveth you.
10But when ye go over Jordan, and dwell in the land which the LORD your God giveth you to inherit, and when he giveth you rest from all your enemies round about, so that ye dwell in safety;
11Then there shall be a place which the LORD your God shall choose to cause his name to dwell there; thither shall ye bring all that I command you; your burnt offerings, and your sacrifices, your tithes, and the heave offering of your hand, and all your choice vows which ye vow unto the LORD:
12And ye shall rejoice before the LORD your God, ye, and your sons, and your daughters, and your menservants, and your maidservants, and the Levite that is within your gates; forasmuch as he hath no part nor inheritance with you.
13Take heed to thyself that thou offer not thy burnt offerings in every place that thou seest:
14But in the place which the LORD shall choose in one of thy tribes, there thou shalt offer thy burnt offerings, and there thou shalt do all that I command thee.
At the time of Christ the only one authorized place that Jews could worship God was in Jerusalem at the temple. What were their worship days it was their feasts days. When they brought a sacrifice or a offering. When they made a vow. Whatever reason would have brought them to the temple they would have worshiped then and there at that time whatever day of the week it was at the only authorized place.
Or in the case of Anna since she could not eat nor could she sleep she stayed in the temple and worshipped round the clock.
If Saturday the Sabbath was the day of worship then we should find Christ and his disciples there every Sabbath in Jerusalem at the temple on the Sabbath. Christ being under the law to fulfill the law. If the law was to worship on Saturday then we would read that is just what Christ did per Deuteronomy 12.
Now God has placed his name on us and we are his temple and we can worship him any day at any time because we are the authorized place and where two or more are gathered he is in the midst of us.
So yeah Christ kept the law the law was you work for six days and keep the Sabbath Holy by not working on it. It was not ordained as a day of worship for the Jews those days would be whatever day they found themselves in the temple the only place under the law authorized to worship God.
This custom, reading from the scriptures on Sabbath came to be the norm for Jews in the Babylonian captivity. Which it was still being kept by the Jews in the first century AD. Even after conversion as exampled by Paul.
Luke 4:16 places Christ in Nazareth when he kept the custom. 16And 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 gospels place him in the synagogue in Galilee as well as in them in Judea. Places him out in a field as well on the sabbath. Jesus kept the Sabbath I agree he kept the law. He also kept the law for where to worship and the synagogue was not the place.
In his encounter with the Samaritan woman she says we worship on this mount, you say we have to worship in Jerusalem. Christ replied back the hour is coming when you won't worship on the mount or in Jerusalem.
Reason I am bringing this up is according to the law at the time of Christ you could only worship God in the Temple in Jerusalem.
Deuteronomy 12:1-14 reads,
1These are the statutes and judgments, which ye shall observe to do in the land, which the LORD God of thy fathers giveth thee to possess it, all the days that ye live upon the earth.
2Ye shall utterly destroy all the places, wherein the nations which ye shall possess served their gods, upon the high mountains, and upon the hills, and under every green tree:
3And ye shall overthrow their altars, and break their pillars, and burn their groves with fire; and ye shall hew down the graven images of their gods, and destroy the names of them out of that place.
4Ye shall not do so unto the LORD your God.
5But unto the place which the LORD your God shall choose out of all your tribes to put his name there, even unto his habitation shall ye seek, and thither thou shalt come:
6And thither ye shall bring your burnt offerings, and your sacrifices, and your tithes, and heave offerings of your hand, and your vows, and your freewill offerings, and the firstlings of your herds and of your flocks:
7And there ye shall eat before the LORD your God, and ye shall rejoice in all that ye put your hand unto, ye and your households, wherein the LORD thy God hath blessed thee.
8Ye shall not do after all the things that we do here this day, every man whatsoever is right in his own eyes.
9For ye are not as yet come to the rest and to the inheritance, which the LORD your God giveth you.
10But when ye go over Jordan, and dwell in the land which the LORD your God giveth you to inherit, and when he giveth you rest from all your enemies round about, so that ye dwell in safety;
11Then there shall be a place which the LORD your God shall choose to cause his name to dwell there; thither shall ye bring all that I command you; your burnt offerings, and your sacrifices, your tithes, and the heave offering of your hand, and all your choice vows which ye vow unto the LORD:
12And ye shall rejoice before the LORD your God, ye, and your sons, and your daughters, and your menservants, and your maidservants, and the Levite that is within your gates; forasmuch as he hath no part nor inheritance with you.
13Take heed to thyself that thou offer not thy burnt offerings in every place that thou seest:
14But in the place which the LORD shall choose in one of thy tribes, there thou shalt offer thy burnt offerings, and there thou shalt do all that I command thee.
At the time of Christ the only one authorized place that Jews could worship God was in Jerusalem at the temple. What were their worship days it was their feasts days. When they brought a sacrifice or a offering. When they made a vow. Whatever reason would have brought them to the temple they would have worshiped then and there at that time whatever day of the week it was at the only authorized place.
Or in the case of Anna since she could not eat nor could she sleep she stayed in the temple and worshipped round the clock.
If Saturday the Sabbath was the day of worship then we should find Christ and his disciples there every Sabbath in Jerusalem at the temple on the Sabbath. Christ being under the law to fulfill the law. If the law was to worship on Saturday then we would read that is just what Christ did per Deuteronomy 12.
Now God has placed his name on us and we are his temple and we can worship him any day at any time because we are the authorized place and where two or more are gathered he is in the midst of us.
So yeah Christ kept the law the law was you work for six days and keep the Sabbath Holy by not working on it. It was not ordained as a day of worship for the Jews those days would be whatever day they found themselves in the temple the only place under the law authorized to worship God.