Ezra 9:4

4. Every one that trembled Ezra was not alone in grief and dismay over the sins of the people. Others with him realized the peril of the hour, and trembled with a profound sense of their danger. For should Divine vengeance burst upon the camp, the innocent and guilty would suffer together. Among those that trembled at the words of the God of Israel were also, doubtless, some of the transgressors who had been brought to realize their guilt and danger.

The evening sacrifice The law ordained that a lamb should be offered each day, morning and evening, and these offerings were called respectively the morning and evening sacrifices. See Exodus 29:38-41. Comp. also 1 Kings 18:29, note. While the people mingled with the heathen, and openly transgressed, they continued to sacrifice to Jehovah, thus apparently forgetting that obedience is better than sacrifice.