'Day of the Lord' in the Bible

The sun shall be turned into darkness, and the moon into blood, before that great and illustrious day of the Lord come.

of our Lord Jesus Christ, to deliver such a one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. Your boasting is not good.

As ye have acknowledged us in part, that we are your boasting, as ye also are ours, in the day of the Lord Jesus.

for ye yourselves know full well, that the day of the Lord cometh like a thief in the night.

But the day of the Lord will come as a thief in the night, in which the heavens shall pass away with a great noise, and the elements being set on fire shall be dissolved, and the earth and the works therein shall be burnt up.