"I will go with you, but I humbly ask of you that our path be of my choosing. On my life and the Grail itself I promise our end destination will be toward Arthur and Camelot, but I cannot with good conscience step foot within my King's domain until I know it will not mean breaking my vow to God." Or rather, cannot in good faith obey his master, the King, before his master, God. "What I ask is you take the time we will have to open my mind to greater truths God may have that I, human and humble in my understanding, may not have been able to see alone-- truths that would allow me to return home without breaking with the will of God."