'Week' in the Bible

Now late on the sabbath day, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre.

And very early on the first day of the week, they come to the tomb when the sun was risen.

Now when he was risen early on the first day of the week, he appeared first to Mary Magdalene, from whom he had cast out seven demons.

I fast twice in the week; I give tithes of all that I get.

But on the first day of the week, at early dawn, they came unto the tomb, bringing the spices which they had prepared.

Now on the first day of the week cometh Mary Magdalene early, while it was yet dark, unto the tomb, and seeth the stone taken away from the tomb.

When therefore it was evening, on that day, the first day of the week, and when the doors were shut where the disciples were, for fear of the Jews, Jesus came and stood in the midst, and saith unto them, Peace be unto you.

And upon the first day of the week, when we were gathered together to break bread, Paul discoursed with them, intending to depart on the morrow; and prolonged his speech until midnight.

Upon the first day of the week let each one of you lay by him in store, as he may prosper, that no collections be made when I come.