John 6:61 and Matthew 15:12, reveals that people will be offended by the Gospel.  We should make sure that it's not ourselves that are offensive.  But we cannot expect that everyone will receive the Gospel, even if the truth is presented properly.  We know that Jesus represented His Father perfectly and yet most people rejected His message.

When Jesus realized He had offended the listeners, He didn't apologize and try to make 'things right' to gain their acceptance. Instead, He got harder.  This hard message of commitment is  beneficial to those who receive it, and it serves a purpose in  exposing the "tares among the wheat."

It is important to be aware that the children of the wicked are placed among the true believers.  We should be very careful about putting just anyone who professes Christianity into any position of authority (1 Timothy 3:10).  

Our best is to preach the Word of God without watering it down.  False believers will not endure sound doctrine (2 Timothy 4:3). They leave when the Word, which is sharper than any two-edged sword, begins to expose the thoughts and intents of the heart.  There will still be those who are deceived and unaware that they are not born again, remaining among the Church until the end of this world.

As long as Jesus was in the world in His physical body, He was lighting the way to the Father.  He now shines through our lives.  It is our responsibility to be a witness.  The purpose of a light is to dispel the darkness.  So lets let our lights shine before men.... (Matthew 5:16).