On the mount, where Jesus Christ started preaching to his disciples, he first preached a one-action-with-its-reward sermon which we all know as The Beatitude (Matthew 5:3) which was to help them get a brief knowledge of what it takes to become acceptable children of God and partakers in the kingdom.
He continued by correcting a thought that probably might have generated within them. “Do not think I have come to abolish the Law or the Prophets;” he started “I have not come to abolish them but to fulfill them.”
This is a check that would help prepare their mind for the many things that he would later do and teach; teachings that might seem too hard for them to understand or keep up with.
One of these teachings is that which I will like to call The Teaching of ‘Heart-ward Sins’ which was recorded in verses 21-30 and was divided into two parts. These two parts are ‘Heart-ward Murder’ and ‘Heart-ward Adultery.’
The summary and purpose of Christ’s teaching of The Heart-ward Sins is this: All sins starts from the heart, and that is the basis for the actual sin; therefore allowing it to start in your heart at all is sin itself, even it, is the real sin.
He told them: concerning murder, “You heard that it was said that anyone who murders will be subject to judgment…, but I tell you that [not even until you murder] anyone who is angry with a brethren will be subject to judgment” (vs. 22) and concerning adultery, “You heard that it was said that you shall not commit adultery, but I tell you that anyone who [even if he had not committed adultery per se] looks at a woman lustfully has already committed adultery with her in his heart” (vs. 28)
These are the sin from the heart and, if we examine truthfully, most of us are guilty of them. One way or another, everyday, we murder our brethrens in the eyes of Jesus Christ and we commit adultery with opposite sex in his eyes.
Are we then, by this, rendering ourselves grateful of his selfless death for us on the cross? Aren’t we nailing him the second time (Hebrew 6:6b), calling him a lie (1 John 5:10) and grieving the Spirit of God everyday (Ephesians 4:30-31) by ignoring one of the first teachings of our Lord Jesus Christ?
One of his first teachings; that means one of his most important teachings that he thought and one of the most important lessons he wants us to live by in everyday of our life!