The document provides commentary on readings for the third Sunday in Ordinary Time. It summarizes the first reading from Isaiah which speaks of God reversing the fate of Zebulun and Naphtali from gloom to light. The Psalm responds with praise for God as light and salvation. The second reading from 1 Corinthians exhorts Christians to unity rather than division. The Gospel reading from Matthew recounts Jesus beginning his ministry in Galilee by calling the first disciples to follow him.