2 Cor 3:4-11 / Matthew 5:17-19
If we are lost in a thick jungle in the darkness of the night and there is no guiding aid to help in getting directions, we may desperately try to figure out a direction and go that way.
But the strange thing is that after a while we will just come back to where we started off from, if we are able to recognize those surroundings.
Otherwise we will be walking round and round in circles with no way out and yet we may think we are going somewhere.
Having a map may not be of much help in that kind of darkness and in that kind of terrain. Having a compass would certainly be more helpful, and of course a guide who knows the ground would be best.
When we understand that, then we would know that God's revelation in the Bible from the Old Testament to the New Testament went from phase to phase and finally culminated in Jesus Christ.
And as Jesus said in the gospel, He came not to abolish the Law and Prophets but to complete them.
It is just like having a map, and then acquiring a compass and then finally a guide comes along to journey with us on the way.
The 2nd reading would also emphasize that the covenant the Lord made with us is not of written letters but of the Spirit who gives life.
Let us ask the Spirit to guide us in our journey of life and to see that Jesus is the one who will lead us to the completion and fulfillment of life.