We turn back to Isaiah (30:19-21, 23-26), the great prophet of the coming Messiah, again today. He speaks of a “Teacher” to come — and how often do we hear Jesus called Teacher/Rabbi in the gospels (dozens of times, actually). He also tells what the people will learn when this Teacher comes on the scene: the words in the headline.
We immediately recall Jesus speaking of Himself as the Way (see Jn 14:6) and speaking about the “constricted…road that leads to life” (Mt 7:14). The important nuance in the text at top is that one can fall of the road on either side. If we take “left” and “right” and use it in modern parlance (progressive and conservative) we see the caution we are given. Embracing divine revelation as safeguarded by the Church is our surest way to stay in the middle of the road. This is why orthodoxy, not contrived political designations, is what we should embrace. Because what else is it but orthos doxa meaning “having the right opinion.” That opinion, when in line with Church teaching. helps us to stay on the narrow Way, ensures that we will come to the knowledge of the Truth, so that we can attain eternal Life with our God, our Brother, and our Teacher.