Today, let’s look at the theme of Spiritual corruption. Let’s begin with the Scriptural witness:
164. The path of holiness is a source of peace and joy, given to us by the Spirit. At the same time, it demands that we keep “our lamps lit” (Luke 12:35) and be attentive. “Abstain from every form of evil” (1 Thessalonians 5:22). “Keep awake” (Matthew 24:42; Mark 13:35). “Let us not fall asleep” (1 Thessalonians 5:6).
Awareness is key. Many look to their surroundings for danger, but a self-satisfied believer may have difficulty with the self-awareness needed to maintain a full vigilance against sin:
Those who think they commit no grievous sins against God’s law can fall into a state of dull lethargy. Since they see nothing serious to reproach themselves with, they fail to realize that their spiritual life has gradually turned lukewarm. They end up weakened and corrupted.
You can check the full document Gaudete et Exsultate on the Vatican website.
Catholic Sensibility 