'Day After Day' in the Bible

And day after day Mordecai used to walk back and forth in front of the court of the harem in order to learn how Esther was doing and what might happen to her.

And after they had spoken to him day after day without his paying any attention to them, they informed Haman to see whether this attitude on Mordecai's part would be permitted. Furthermore, he had disclosed to them that he was a Jew.