This was to fulfill what was spoken through Isaiah the prophet:
"1THE LAND OF ZEBULUN AND THE LAND OF NAPHTALI, BY THE WAY OF THE SEA, BEYOND THE JORDAN, GALILEE OF THE GENTILES -
References for Matthew 4:15
"2THE PEOPLE WHO WERE SITTING IN DARKNESS SAW A GREAT LIGHT, AND THOSE WHO WERE SITTING IN THE LAND AND SHADOW OF DEATH, UPON THEM A LIGHT DAWNED."
References for Matthew 4:16