¹One day, Sangjenim said to Gyeong-seok, “One who would stand in My Imperial Court must recite the ‘Preface to Shuzhuan’ many times.²You must recite it ten thousand times. Momentous destiny lies within the recitation.”

³In obedience to Sangjenim’s command, Gyeong-seok refrained from leaving his house and sat in stillness, reciting the Preface day and night.⁴During this time, Sangjenim tended to the chores Himself, even bringing Gyeong-seok meals. Sangjenim’s devotion to Gyeong-seok was as tender and complete as the devotion given in nurturing a young child.

⁵Sangjenim one day revealed to the disciples, “The ‘Preface to Shuzhuan’ holds the secret of My work.”