Yes, Rev., we could not sup with Him "if it were not in our heart." And it is God who changes the heart and regenerates the fallen sinner.
And yes, "our cupboards are bare." We are sustained only by what He gives us.
Listen with a discerning ear, Rev.
Open the door, beloved, and He will come into your souls. He has long been knocking, and all with this object, that He may sup with you, and you with Him. He sups with you because you find the house or the heart, and you with Him because He brings the provision. He could not sup with you if it were not in your heart, you finding the house; nor could you sup with Him, for you have a bare cupboard, if He did not bring provision with Him. Fling wide, then, the portals of your soul. - C.H. Spurgeon To whom is Spurgeon appealing with this statement? Please do not avoid the bold portions when you answer. The onus is on the listener to 'Open the door', not the knocker. Jesus will not enter unless invited in.