I could contest this till dawn, but for starters still waiting to hear what flour was that famous "bread of wickedness" made of, if it "must" be literal first (as you claim) what kind of wicked ingredients went into that bread...
See also Proverbs 20:17,
Pro 20:17 Bread of deceit is sweet to a man; but afterwards his mouth shall be filled with gravel.
Job 24:6 They reap every one his corn in the field: and they gather the vintage of the wicked.
Then see, how God gave instruction for His bread (Table of the Presence; Sanctuary, Psalms 77:13) to be made, and His cup to be filled. Anything, which were not in that manner, was wickedness (ie, disobedience). It also deals with the manner in which the bread (grain, corn, etc) and 'wine' were dealt with:
Amo 8:5 Saying, When will the new moon be gone, that we may sell corn? and the sabbath, that we may set forth wheat, making the ephah small, and the shekel great, and falsifying the balances by deceit?
Amo 8:6 That we may buy the poor for silver, and the needy for a pair of shoes; yea, and sell the refuse of the wheat?
As for natural being first, and spiritual second, it is given by scripture itself as a rule, a law of God:
1Co 15:46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
Many examples may be given in scripture, in the mouth of many more than two or three witnesses.
The lamb slain from the foundation, in which from the God made coats of skins for Adam/Eve (natural), and circa 4,000 years later, John the Baptist pointed to "the Lamb of God which taketh away the sin of the world" (spiritual).
Another, is Adam the first and Adam the second (Jesus).
Another, is 1 Corinthians 10, Moses and Israel, etc and the final Generations.
etc.
Do I really believe, that you would "contest this till dawn"? No. Not at all.
Do I really believe, that you are "still waiting to hear what flour was that famous "bread of wickedness" made of"? No. Not at all.
I think, based upon the evidence, you have stopped your ears and closed your eyes, lest at any time, you should be healed.