As you go through the process of sorting and proving all things, assume that the old man has died and you are the executor of the Will. You must close out everything.32 Let's look at the old man's clothes. They're easy to probate because there is no paperwork on clothes. You can just give them to the new man. You have just acquired a dead man's clothes. Most people do not carry papers on furniture, household goods, computers, and pianos so you can easily acquire these from the old man, too.
Utility bills and other monthly obligations of the old man must be paid. A new account under the new name is opened for those services that are to be retained.
Credit cards are paid in full and then canceled. You won't want to bring those liabilities into the Kingdom. When Rachel and I were probating the old people, we paid off our credit cards, cut them up and sent them back with a letter saying we were canceling our account. We told them Our Lord had instructed us that we are to owe no man anything but the continuing debt to love one another.33 Therefore, we can no longer accept credit. Even six months after we canceled our credit cards, they continued sending us offers. We finally called them and complained. They said it takes six to seven months to be removed from their mailing list.
Don't neglect to change your utility bills to the new name. You want all references to the old man to disappear. Having monthly bills addressed to the new man helps give him credibility.
32 - 1 Thessalonians 5:21, 22 Test all things; hold fast what is good. Abstain from every form of evil.
33 - Romans 13:8