How would you interpret the meaning of this devotional – “You are to feel plenty. My storehouses are full to overflowing. You must see this in your mind before you can realize it in material form.”?

I would feel like my ears were being tickled by a moronic notion of GOD’s real goodness. GOD does not call His beloved children to lives of ease and plenty; He calls them to lives of service to others where self, self-interest, etc. prosper in the warm glow of making others’ lives better.

GOD’s children come to Him with contrite, broken hearts to confess their imperfect natures. To these He gives mercy, and invites them to an afterlife of joy we can’t comprehend on this earth.

Joy we can comprehend on this earth, in material form, distracts us completely from what GOD has set out for us to do. Paul expresses this idea with brilliance and clarity in his letter to the church in Ephesus:

(v. 8) For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God—

(v.9) not by works, so that no one can boast.

(v.10) For we are God’s handiwork, created in Christ Jesus to do good works, which God prepared in advance for us to do.

Running after an overflowing storehouse is hardly going to do any of that. The storehouse in question isn’t full of gold and wheat, it’s full of love and mercy.