'Day of the Lord' in the Bible

the sun shall be turned to darkness, and the moon to blood, before the coming of the day of the Lord -- the great and illustrious;

to deliver up such a one to the Adversary for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.

according as also ye did acknowledge us in part, that your glory we are, even as also ye are ours, in the day of the Lord Jesus;

for yourselves have known thoroughly that the day of the Lord as a thief in the night doth so come,

and it will come -- the day of the Lord -- as a thief in the night, in which the heavens with a rushing noise will pass away, and the elements with burning heat be dissolved, and earth and the works in it shall be burnt up.