Today's Gospel tells of a Resurrection appearance during which the Risen Lord "opens" the minds of the disciples to understand the Scriptures.
How to understand the Scriptures is very much a live issue in our world. It constitutes lamentable divisions with Christianity and impacts controversies about creation and evolution.
In our relativistic world, we look for a "controlling insight" to guide our interpretation. And this principle is the Risen Christ himself. It is he who opens the mind to understand the Scriptures. And where is he found? He is alive in the church constituted as Body of Christ, and in his Spirit working through the Sacraments. So if you want to read the Scriptures properly, place yourself within the sacramental life of the Body of Christ.