9 There is, nevertheless, some consolation for Us even in looking on these evils, and We may lift up Our heart in hope. For God "created all things that they might be: and He made the nations of the earth for health. " (3) But as all this world cannot be upheld but by His providence and divinity, so also men can only be healed by His power, of Whose goodness they were called from death to life. For Jesus Christ redeemed the human race once by the shedding of His blood, but the power of so great a work and gift is for all ages; "neither is there salvation in any other." (4) Hence they who strive by the enforcement of law to extinguish the growing flame of lawless desire, strive indeed for justice; but let them know that they will labor with no result, or next to none, as long as they obstinately reject the power of the gospel and refuse the assistance of the Church. Thus will the evil alone be cured, by changing their ways, and returning back in their public and private life to Jesus Christ and Christianity.
Source: Exeunte Iam Anno (Vatican.va)