3 But We, who are charged with the care of defending and developing the Kingdom of Christ, have at the same time to exercise continual care and vigilance to keep away everything adverse to this Kingdom, and to support whatsoever may promote it. Therefore, from the beginning of Our Pontificate, we had to examine most carefully whether it would be lawful, convenient and useful to support with Our authority the above mentioned petitions. We have not neglected and do not at present neglect to offer insistent prays to God that He might clearly manifest the will of His ever-adorable goodness in this instance.
Source: Deiparae Virginis Mariae (Vatican.va)