Luke 22:12  KJV  "And he shall shew you a large upper room furnished:  there make ready."

Interpretation based on the following study:  Likewise too with us, He indeed declared and showed clearly, establishing us to abide above and beyond mutability, frailty and anything of earthly origin, to dwell on high.  In exceeding Majesty, Greatness and Mighty Power, He furnished to establish and strengthen us to endure, fastening us to remain, preserving us to stand fast.  He prepared and made absolutely ready those things ordained by God in a dwelling place for us yonder, close and near Him.

Greek:  kakeinos humin deizei anogeon mega estomenon ekei hetoimasate

Definitions/Greek Strong's numbers:

2548-kakeinos:  that one also, that person moreover indeed, marking special distinction and emphasis, this self same even also,  the same then too, this one therefore, those both likewise, they too

5213-humin:  to, with or by you, your, yourselves, you

1166-deiknuo:  to show, to indicate by word or act, show forth, prove, a pointing out, to declare, manifest, evident, to show wholly and mightily, to give self wholly to denoting a fixed position in place, time or state in relation of rest, to exhibit, appoint, ordain, to show clearly, to appoint to position or service, to arrange thoroughly, institute, prescribe, command, set in order, to accomplish thoroughly to bring through to the end, to assign, compact, bequest, testator, to will, dispose of one's own affairs of something that belongs to one, to make a covenant, to stand, set, establish, abide, continue, hold up, make a stand, make known, chose, to place down permanently, designate, convoy, make ruler, conduct, to accord, to direct, to consummate, dispense, finish, bring to completion, terminate, execute, end, fulfill, satisfy, to place in order, determine, purpose, give, commit, enabled, counted, to tend and feed, produce, bring forth, deliver, bear, lay down

508-anogeon:  above the earth, dome, upward or on the top of the solid ground, a higher place, that which is above, above the world, above and beyond mutability and frailty, above that which is earthly in origin, above man and the inhabited earth, dwelling on high, a higher empire, total replacement, equivalence or exchange in place of the earthly, in the room of earthly things

3173-megas:  big, great, loud, exceedingly, high, large, mighty, sore, strong, of degree and intensity, rank and magnitude, greatness, divinity, majesty, dignity, ascription of praise acknowledging the attributes of God, increase, large, magnificent, glory, splendor, superbness, mighty power, conspicuous favor and position, prominent, perfection, wonderful works, excellent, becoming, fitting, greatest

4766-stronnumi:  positing to strew, spread, carpet, couch, furnish, steadfast, stable, sure, solid, firm, confirm, make strong, solidify, establish, support, found, strengthen, uphold, sustain, fasten, make to stand, set fast, install, set upright, endure, continue, abide, remain, placed upon a prominent place, forbear, carry, bear up from under, preserve, stand fast, make to rest, provide, feed and nourish, bring up, teach and instruct

1563-ekei:  there, thither, yonder, location away, from that place

2090-hetoimazo:  to prepare, provide, make ready absolutely, those things which are ordained by God, authority, preparations, firm, provision, ready, fit, foundation, things made ready, in readiness, close and near at hand, present

Definitions derived from:  The New Strong's Expanded Exhaustive Concordance of the Bible, red letter edition, Hebrew & Greek Dictionary, 2010 edition.  CWP Teacher edition Interlinear Bible.