Reference

Numbers 19:10

And he that gathereth the ashes of the heifer shall wash his clothes, and be unclean until the even: and it shall be unto the children of Israel, and unto the stranger that sojourneth among them, for a statute for ever.
8

And he that burneth her shall wash his clothes in water, and bathe his flesh in water, and shall be unclean until the even.

9

And a man that is clean shall gather up the ashes of the heifer, and lay them up without the camp in a clean place, and it shall be kept for the congregation of the children of Israel for a water of separation: it is a purification for sin.

10

And he that gathereth the ashes of the heifer shall wash his clothes, and be unclean until the even: and it shall be unto the children of Israel, and unto the stranger that sojourneth among them, for a statute for ever.

11

He that toucheth the dead body of any man shall be unclean seven days.

12

He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.

Counter-Arguments

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

Israel-Specific Promises

The verse describes a ritual purification law applicable to anyone, including strangers, and does not contain a promise, prophecy, or covenant specifically for ethnic Israel, but rather a universal statute within their legal framework.

Symbolic / Spiritual Interpretation

The verse explicitly describes a physical ritual involving ashes, washing clothes, and a state of being "unclean" until evening, which are all literal actions and conditions. There is no language within the verse itself that suggests these physical acts or states are metaphors for spiritual purity or moral holiness.