“Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.”
2 Timothy 2:15 KJV
There is a lot of information within this study alone that refutes the first day of the week as a day to keep holy.
The truth will make you free, free indeed.
“and ye shall know the truth, and the truth shall make you free. If the Son therefore shall make you free, ye shall be free indeed.”
John 8:32,36 KJV