The detectives on crime dramas have common details that they are investigating.  Did the suspect have opportunity?  Did the suspect have motive?  These are important details to the solving of a crime.  Motive is a funny word, it is from the Latin meaning, "to move."  In other words it is a word that describes our inner drive, impulse or intention (according to Mr. Webster).  This matter of motive is not only important in solving a crime, it is important in our service to God.  The follower of Jesus is to have a "rightness" that exceeds externalism, it follows that Jesus would address this matter of motive.  Why do we do what we do?  Let's face it, often we are tempted to do things merely to keep others happy or perhaps...to make ourselves happy by their approval.  This "people-pleasing" lifestyle can become an addiction.  In John 12 we learn of people that were so addicted to the praise of others that they could not believe and confess Christ for who He really was.  They actually believed that the praise of men was more valuable than the approval of God!  Jesus wants us to have abundant life and we will never have it if we are addicted to the approval of other people.  I think it was Augustine who first coined the phrase, "living for an audience of One."  Whoever came up with the phrase was right in line with what Jesus has taught us about motives, let's live for the reward of the Father and not the petty opinions of other people.  There is life and liberty in actually doing what Jesus said.