The Heidelberg CatechismThe Heidelberg CatechismQ. 123. What is the second petition?
A. "Thy kingdom come." That is: so govern us by thy Word and Spirit that we may more and more submit ourselves unto thee. Uphold and increase thy church. Destroy the works of the devil, every power that raises itself against thee, and all wicked schemes thought up against thy holy Word, until the full coming of thy kingdom in which thou shalt be all in all.
