 This offering was to be given. Every week, the believer was to think in terms of God with his paycheck. One day a week, money was to be given to God. This was to be the norm, and it was the norm of the early church. It was to be the norm also for special offerings. On the first day of the week, believers were to think about God with their finances. It is actually a form of worship. Now, obviously, one reason why this was to be done on the first day of the week is because when God gets his people together, he wants him thought about first before the week unfolds.