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.

In what one word is the character of God expressed?
What did Jesus say of the one who loves Him?
Which day is the Sabbath?
What effect did Christ's answers have upon the people?
By what authority was Sunday Sabbath-keeping instituted?
What was to take place under the third trumpet?
Who else appeared on this occasion?

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