'Day and Night' in the Bible

Won't God grant his chosen people justice when they cry out to him day and night? Is he slow to help them?

but their plot became known to him. They were even watching the gates day and night to murder him,

Our twelve tribes, worshiping day and night with intense devotion, hope to attain it. It is because of this hope, O King, that I am accused by the Jews.

Then I heard a loud voice in heaven say, "Now the salvation, the power, the kingdom of our God, and the authority of his Messiah have come. For the one who accuses our brothers, who accuses them day and night in the presence of our God, has been thrown out.

and the Devil who deceived them was thrown into the lake of fire and sulfur, where the beast and the false prophet were. They will be tortured day and night forever and ever.