'Day and Night' in the Bible

And the four beasts, having every one of them six wings, are full of eyes round about and inside: and without resting day and night, they say, Holy, holy, holy, Lord God, Ruler of all, who was and is and is to come.

This is why they are before the high seat of God; and they are his servants day and night in his house: and he who is seated on the high seat will be a tent over them.

And a great voice in heaven came to my ears, saying, Now is come the salvation, and the power, and the kingdom of our God, and the authority of his Christ: because he who says evil against our brothers before our God day and night is forced down.

And the smoke of their pain goes up for ever and ever; and they have no rest day and night, who give worship to the beast and his image, and have on them the mark of his name.

And the Evil One who put them in error was sent down into the sea of ever-burning fire, where the beast and the false prophet are, and their punishment will go on day and night for ever and ever.