Proverbs 23:7 in the World English Bible
for as he thinks about the cost, so he is. “Eat and drink!” he says to you, but his heart is not with you.
Context
6 Eat thou not the bread of him that hath an evil eye, neither desire thou his dainty meats:
7 For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.
8 The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.