Strengthened their hands; either because they had embraced, or at least favoured the Jewish religion, concerning which they were instructed by the Israelites that had now for a long time dwelt among them; or rather, that they might hereby gratify the king's humour, and purchase his favour; for they perceived him to be hearty and forward in the work.
Related Commentaries of Ezra 1:6
Ezra 1:6
6 And all they that were about them strengthenedb their hands with vessels of silver, with gold, with goods, and with beasts, and with precious things, beside all that was willingly offered.