2.What have some hospitable people done without being aware of it?

They have entertained angels.

In our day, in some cultures, it is dangerous to be friendly to strangers. The admonition to entertain strangers, as is true of every other part of the Scriptures, must be applied by the Spirit of God.

We always must ask Jesus for help in obeying the written Word. To attempt to obey the written Word without asking Jesus to give us the necessary wisdom and strength tends to move us toward a rigid, legalistic type of experience that is not filled with God’s Presence, an experience that will not bring forth righteousness, peace, and joy in the Holy Spirit.