1 Thessalonians 2:9
For you remember, brothers, our labor and travail; for working night and day, that we might not burden any of you, we preached to you the Good News of God.
Yahweh went before them by day in a pillar of cloud, to lead them on their way, and by night in a pillar of fire, to give them light, that they might go by day and by night:
The people rose up all that day, and all the night, and all the next day, and gathered the quails. He who gathered least gathered ten homers; and they spread them all abroad for themselves around the camp.
1 Chronicles 9:33
These are the singers, heads of fathers' [houses] of the Levites, [who lived] in the rooms [and were] free [from other service]; for they were employed in their work day and night.
But we made our prayer to our God, and set a watch against them day and night, because of them.
Day and night they prowl around on its walls. Malice and abuse are also within her.
but their plot became known to Saul. They watched the gates both day and night that they might kill him,
Always, night and day, in the tombs and in the mountains, he was crying out, and cutting himself with stones.
Therefore watch, remembering that for a period of three years I didn't cease to admonish everyone night and day with tears.
2 Thessalonians 3:8
neither did we eat bread from anyone's hand without paying for it, but in labor and travail worked night and day, that we might not burden any of you;