Matthew 7:13-14
Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat: Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.
Read all of Matthew 7

Mt. 10:13 And if the house be worthy, let your peace come upon it: but if it be not worthy, let your peace return to you.