Be Wary Of Bad Friends

When you do hachnosos orchim and invite guests into your house - you should invite anyone. But when it comes to having friends - you should only have friends who are good spiritual people. We see this about Avraham. When it came to inviting guests - even idolators were welcome, but when it came to Lot, he distanced himself. A guest is only temporary while a friend is constant. One must be wary of bad friends.

It says about Avraham and Avimelech ויכרתו שניהם ברית - The two forged a covenant. Even though they made a bris they remained "two" [i.e. separate].

[The Heilige Beis Yisrael of Gur]

Li'ilui nishmas Sheindel Feige bas Akiva