You Are Cordially Invited

Just then, Avrohom looked up and saw three men walking down the road. He was so excited. "Guests!" he shouted, and jumped up from his seat. His feet flew as he ran to greet the travelers.

Who were these strangers? They were, in fact, angels (malachim) sent by HaShem - Gavriel, Michoel, and Rafael - just so Avrohom could welcome guests and serve them. Each of the three was sent with a different mission. Rafael was the healer, who came to make Avrohom feel better.

"Please come to my tent!" Avrohom said to the travelers. "You can wash your feet! I will serve you delicious food and give you water to drink! Please come!"

What else could they do? Of course they accepted Avrohom's invitation.