He cried with a lamentable voice - A voice full of anxious solicitude. Literally, “a voice of grief.” Such a cry would be natural on such an occasion.
O Daniel, servant of the living God - The God who has life; who imparts life; and who can preserve life. This was the appellation, probably, which he had heard Daniel use in regard to God, and it is one which he would naturally employ on such an occasion as this; feeling that the question of life was entirely in his hands.
Whom thou servest continually - At all times, and in all circumstances: as a captive in a distant land; in places of honor and power; when surrounded by the great who worship other gods; and when threatened with death for your devotion to the service of God. This had been the character of Daniel, and it was natural to refer to it now.