These wise men believed in Christ when they had never seen Him; but that was not all. They believed in Him when the scribes and Pharisees were unbelieving; --but again that was not all. They believed in Him when they saw Him a little infant on Mary's knees, and worshipped Him as a King. This was the crowning point of their faith. --They saw no miracles to convince them. They heard no teaching to persuade them. They beheld no signs of divinity and greatness to overawe them. They saw nothing but a new-born infant, helpless and weak, and needing a mother's care, like any one of ourselves. And yet when they saw that infant, they believed that they saw the divine Saviour of the world! "They fell down and worshipped Him."
~J.C. Ryle Expository Thoughts On Matthew