In the beginning, God gave us weeks. Then He gave us instructions on how to use them. When Jesus came, he gave us freedom to use weeks at our own discretion. The early church chose to gather on Sundays because Jesus came back to life on the first day of the week. On that day, he shared the good news with his disciples and they acknowledged that it was with great sacrifice that the gap between us and God was bridged. The same thing happened again a week later. Over 100,000 weeks later, the same thing is still happening.