1 Thessalonians 2:9
For you remember our labor and hardship, brothers. Working night and day so that we would not burden any of you, we preached God’s gospel to you.
The Lord went ahead of them in a pillar of cloud to lead them on their way during the day and in a pillar of fire to give them light at night, so that they could travel day or night.
The people were up all that day and night and all the next day gathering the quail—the one who took the least gathered 50 bushels—and they spread them out all around the camp.
1 Chronicles 9:33
The singers, the heads of the Levite families, stayed in the temple chambers and were exempt from other tasks because they were on duty day and night.
So we prayed to our God and stationed a guard because of them day and night.
day and night they make the rounds on its walls.
Crime and trouble are within it;
but their plot became known to Saul. So they were watching the gates day and night intending to kill him,
And always, night and day, he was crying out among the tombs and in the mountains and cutting himself with stones.
Therefore be on the alert, remembering that night and day for three years I did not stop warning each one of you with tears.
2 Thessalonians 3:8
we did not eat anyone’s food free of charge; instead, we labored and struggled, working night and day, so that we would not be a burden to any of you.