Does "to which it is the main object of her existence to testify" mean "it is the main object of the

Does "to which it is the main object of her existence to testify" mean "it is the main object of the church to testify the reality of that spiritual world"?

While the world at large has been filled with an eager awakening interest, the Church, which claims to be the custodian of religious and spiritual truth, has, strange to say, until quite recently, turned a deaf ear to all modern evidences bearing upon the reality of that spiritual world to which it is the main object of her existence to testify, and even now is only just showing faint signs that she realizes how important this matter is becoming for her.

"The History of Spiritualism," by Sir Arthur Conan Doyle