When they saw the star,.... Which by its appearance, size, brightness, &c. they knew to be the same with that which they had seen, when in their own country;they rejoiced with exceeding great joy; a "pleonasm" or a redundancy of expression frequently used by the Hebrews, see Joh 4:6 and the Septuagint there; setting forth the rapture, the excess of joy they were in upon the sight of the star.
Very probably before this, their hearts were sad, their countenances dejected, and they greatly discouraged, having taken so great a journey, and as yet to so little purpose.