Ray Stedman, in a 1965 sermon, “Ezra:The Way Back” comments on the events of Ezra 6:
The minute the people began to turn back to God, he also turned the hearts of the kings, Darius and Artaxerxes, and they issued the decree that started the temple work again. Finally the work was finished. In chapter 6 we read that the first thing they did was celebrate the Passover, marking the beginning of their life under God. Similarly, you can never make sense out of your conversion unless you are in fellowship with the living God. You have nothing to celebrate. You have nothing to thank God for unless you are enjoying the glory and the light of heaven upon your heart. It is only when you are in fellowship, with the temple built, that the Passover can bring joy to you.