Luke 22:1-6, 47-53
but Jesus said to him, “Judas, would you betray the Son of Man with a kiss?” (Luke 22:48 ESV)
A kiss is not typically thought of as the sign for rejection, betrayal, and pain. The Bible even reads in one passage that believers are to "greet one another with a kiss." So it makes it that much more interesting that Judas chose a kiss for his method to signal the mob.
Chances are pretty good that you have been rejected in your life. Perhaps you have suffered a horrible betrayal at the hands of someone very near and dear to you. Jesus can sympathize. In fact, he often warned his followers that such would be the case for those following him.
We all know that the sting of betrayal is bitter. It hurts a lot. With that being said, we should strive to take extra special care not to wound our friends and neighbors. When we greet them it should be with the kiss of friendship, not that of betrayal.