'Dawn' in the Bible

He saw that his disciples were straining at the oars, because the wind was against them. Shortly before dawn he came to them, walking on the sea. He intended to go up right beside them,

So keep on watching, because you don't know when the master of the house is coming whether in the evening, at three o'clock in the morning, or at dawn.

At earliest dawn, after the High Priests had held a consultation with the Elders and Scribes, they and the entire Sanhedrin bound Jesus and took Him away and handed Him over to Pilate.

And very early after dawn on the first day of the week, they came at the time of the coming up of the sun to the place where the body had been put.