What shows that the angels sent to Abraham and Lot were real beings?

Answer

"And he [Abraham] took butter, and milk, and the calf which he had dressed, and set it before them; and he
stood by them under the tree, and they did eat." "And he [Lot] made them a feast, and did bake unleavened
bread, and they did eat." Gen. 18:8; 19:3.

What three definite witnesses of acceptance are mentioned by John?
Upon what ground were the previous promises then renewed to Abraham?
What answer was addressed to Daniel?
What is said of one who professes to know the Lord, but does not keep His commandments?
How was this covenant then confirmed and dedicated?
What was already at work in the church in Paul's day?
What has He promised to be to those in trouble?

Questions & Answers are from the book Bible Readings for the Home Circle