put one's house in order

verb2

1. •
   To clean and arrange in an orderly manner the furnishings and other contents of one's house.

   • First she had put her house in order, working deftly, her pretty hair pinned up in a towel—all in order but Peter's room. That was to have a special cleaning later. — 1914
2. •
   To organize one's financial and other affairs, especially in preparation for a life-changing event.

   • And when Ahithophel saw that his counsel was not followed, he saddled his ass, and arose, and gat him home to his house, to his city, and put his household in order, and hanged himself, and died, and was buried in the sepulchre of his father.