Which of the following definitions pertain to Culture?

Bakit maraming nagsamba ng 1st day(sunday) instead of 7th day (saturday)? ang sabi ng dios "honor the seventhday dahil ito ang araw ng kanyang pagpahinga. pwede bang ma changed ang law na ito? god is perfect his word never change. god said heaven and earth will pass away but my word will still remain , meaning the word of god never change. why then many people honored the 1st day instead of the 7th day? are they really love god , respect god or respect the law of man? ( hindi ako seventhday adventist para promote ko ang sabbath nila nasurprise lang ako ngayong malaki na ako na ang sunday pala ay 1st day na buong akala ko na ito ang tunay na araw na dapat tayong magsamba sa dios which is mali dahil sa tao ito na batas hindi sa dios)