Reference

Exodus 40:2

On the first day of the first month shalt thou set up the tabernacle of the tent of the congregation.
1

And the Lord spake unto Moses, saying,

2

On the first day of the first month shalt thou set up the tabernacle of the tent of the congregation.

3

And thou shalt put therein the ark of the testimony, and cover the ark with the vail.

4

And thou shalt bring in the table, and set in order the things that are to be set in order upon it; and thou shalt bring in the candlestick, and light the lamps thereof.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

First Day of the Week

The verse explicitly mentions "the first day of the first month," which refers to a specific calendar date within a month, not the first day of the week (Sunday).