Ballaton: Come forth from thy abode and speak clearly in my speech. (Sebastian speaks English)
Bellony: Put forth thy might and discover unto me the knowledge and power in thy keep. (Ciel uses Sebastian’s power to achieve his goals)
Halliy: Answer in the inward silence all of my questions without fail. (Ciel orders Sebastian that he shall never lie)
Halliza: Assume and show forth unto me thy form of divine perfection. (Sebastian appears in human form as the perfect butler)
Soluzen: Open unto me thy secret door and fulfill me of my purpose. (Sebastian shall help Ciel to obtain his revenge)
In a way, the contract seal visibly holds all the conditions of the contract between Ciel and Sebastian.