ἰδόντες δὲ τὸν ἀστέρα ἐχάρησαν χαρὰν μεγάλην σφόδρα,

1. ἰδόντες
   having seen
2. δὲ
   but
   and
3. τὸν
   the
4. ἀστέρα
   star
5. ἐχάρησαν
   they rejoiced
   rejoiced
6. χαρὰν
   joy
7. μεγάλην
   great
8. σφόδρα
   exceedingly
   very, greatly
9.  
   ,
    

Having seen the star, they rejoiced with exceedingly great joy.