Claim. The foundation-of-faith is restored by an acceptable symbolic offering (e.g. a creature offered as substitute for God’s Word), which sets an indemnity condition for the restoration of all things and the symbolic restoration of human beings; the foundation-of-substance is then established by a substantial offering in which a Cain-position person sets an Abel-position person above himself — the indemnity for the actual restoration of human beings.
Elaboration. Per DP §1.3, the two offerings track the principle-of-creation order: God created things first, then humans. Restoration proceeds things-first.
The symbolic offering serves two purposes: (i) to make indemnity for the natural world’s restoration to its original God-relation, since Satan gained dominion over creation through humans (“the whole creation has been groaning in travail,” Rom 8:22); and (ii) to make symbolic indemnity for human beings themselves, since fallen humans fell beneath created things and must approach God through what is closer to Him.
The substantial offering, an internal offering of persons, can be made only after the symbolic offering succeeds. It is “carried out when a person in cain’s position honors the person in abel’s position and sets him above himself as an offering” — fulfilling the indemnity for the restoration of children, reckoned simultaneously as the indemnity for the restoration of parents (since adam could not directly make the offering: his Satan-kinship would force God into the unprincipled role of second master).
These two offerings together build the foundation-for-the-messiah in a family — supplying the offering-mechanism that Ch 2-1’s abstract foundation-of-faith and foundation-of-substance atomics presupposed.
See also. Each Part 2 chapter’s family providence operationalizes this two-stage structure; ad hoc revisions (Noah making his own symbolic offering, Abraham failing) reference this baseline.