The indemnification provided by this Article shall be deemed to be discretionary unless otherwise required as a matter of law or under any agreement or provided by insurance purchased by the church, both as to action of each person seeking indemnification under this Article in his official capacity and as to action in another capacity while holding that office, and may continue as to a person who has ceased to be a pastor, deacon, officer, employee, or agent and may inure to the benefit of the heirs, executors, and administrators of that person.