Thrivent Financial for Lutherans has converted its bank to a credit union with the creation of Thrivent Federal Credit Union. Thrivent FCU will have approximately $500 million in assets, making it one of the largest faith-based credit unions in the United States. The new credit union, which acquired assets and liabilities formerly held by Thrivent Financial Bank, will have a potential membership of 2.5 million members nationwide, according to a release from the National Credit Union Administration, which approved the transaction along with the Federal Deposit Insurance Corp. and other regulators. The credit union will serve its members from two offices, one located in Minneapolis and the other in Appleton, Wis. Thrivent FCU will also serve members nationwide through a call center and online transactions.