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In Acts 20:7 where it says that they came together on the first day of the week and spoke till midnight they used to keep the days from sunset to sunset so this would have been on Saturday night verse 11 says at the breaking of the day they departed which would have been Sunday morning so there was no church on Sunday we need to understand the Bible according to how they wrote it .
Colossians is taalking about the ceremonial laws which were also called sabbath days
Leviticus 23:24
(24) Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.
Daniel 9 teaches us that Jesus put an end to the Ceremonial laws
Also only if we are Jews do we stay at home have you not read what Jesus spoke about the sabbath?
Hebrews 10:25
(25) Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.
Acts 13:42-44
(42) And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath.
(43) Now when the congregation was broken up, many of the Jews and religious proselytes followed Paul and Barnabas: who, speaking to them, persuaded them to continue in the grace of God.
(44) And the next sabbath day came almost the whole city together to hear the word of God.
Colossians is taalking about the ceremonial laws which were also called sabbath days
Leviticus 23:24
(24) Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.
Daniel 9 teaches us that Jesus put an end to the Ceremonial laws
Also only if we are Jews do we stay at home have you not read what Jesus spoke about the sabbath?
Hebrews 10:25
(25) Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.
Acts 13:42-44
(42) And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath.
(43) Now when the congregation was broken up, many of the Jews and religious proselytes followed Paul and Barnabas: who, speaking to them, persuaded them to continue in the grace of God.
(44) And the next sabbath day came almost the whole city together to hear the word of God.