'Day and Night' in the Bible

And will not God avenge His elect, who are crying to Him day and night, and He is long suffering over them?

but their plot became known to Saul. And they were watching the gates also, both day and night, that they might kill him;

unto which promise our twelve-tribed nation, earnestly serving day and night, is hoping to attain; concerning which hope, O King, I am being accused by Jews.

And the four living creatures, having each one of them six wings, are full of eyes around and within; and they have no rest, day and night, saying, "Holy! Holy! Holy! the Lord God, the Almighty, Who was, and Who is, and Who is coming!"

For this reason are they before the throne of God, and they serve Him day and night in His Temple; and He Who sitteth on the throne will spread His tabernacle over them.

And I heard a great voice in Heaven, saying, "Now came the salvation, and the power, and the Kingdom of our God, and the authority of His Christ; because the accuser of our brethren was cast down, he who accused them before our God day and night;

And the smoke of their torment ascends forever and ever; and they have no rest day and night, those who worship the beast and his image, and whosoever receives the mark of his name.

And the Devil who deceived them was cast into the lake of fire and brimstone, where also the beast and the false prophet were cast; and they shall be tormented, day and night, forever and ever.