Reference

Leviticus 23:16

Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the Lord.
14

And ye shall eat neither bread, nor parched corn, nor green ears, until the selfsame day that ye have brought an offering unto your God: it shall be a statute for ever throughout your generations in all your dwellings.

15

And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete:

16

Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the Lord.

17

Ye shall bring out of your habitations two wave loaves of two tenth deals: they shall be of fine flour; they shall be baken with leaven; they are the firstfruits unto the Lord.

18

And ye shall offer with the bread seven lambs without blemish of the first year, and one young bullock, and two rams: they shall be for a burnt offering unto the Lord, with their meat offering, and their drink offerings, even an offering made by fire, of sweet savour unto the Lord.

Counter-Arguments

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

Seventh-Day Sabbath

The verse mentions "seventh sabbath" as a point in a counting sequence, but it does not define or describe the Seventh-Day Sabbath itself, nor does it explicitly state that the seventh day is a Sabbath or rest day. Its primary focus is on the counting of days to an offering.

First Day of the Week

The verse explicitly mentions "the morrow after the seventh sabbath" and "fifty days," but it does not use the phrase "first day of the week" or any equivalent terminology.

Land Sabbath / Rest for the Earth

This verse describes a numerical count of days leading to an offering, with no mention of land, agricultural cycles, fallow fields, or any concept of rest for the earth.