Great Joy

When they saw the star, they rejoiced with exceedingly great joy.  Matthew 2:10

The wise men from the east had made it to Jerusalem, and were from there directed to Bethlehem by Herod. This may explain one reason they were called wise, them being one of the very few groups of travelling men to stop and ask for directions. The star they had seen in their homeland had apparently given only a sort of over-this-way sort of direction to get them on the road. One might ask why the star didn't direct them around Jerusalem and so avoid stirring up Herod, but that would be to forget about prophecy. The stop in Jerusalem set fulfillment of prophecies in motion, and then as they were leaving the star appeared to the wise men once more and they rejoiced. The purpose in Jerusalem accomplished, the star then leads them directly to the house where Jesus and His mother are staying. 

When they saw the star again, the wise men rejoiced with great joy, but when they saw the newborn King, they fell down and worshiped. Oh yes! God's Son has come down!

Bucky