My father had a metal silhouette of a black cat in his garden. It had glistening marble eyes and would supposedly scare off unwanted cats. The regular neighbourhood cats soon discovered that it posed no threat. Let us feels confident in the knowledge that Jesus has conquered the sin in our lives and "has gone into heaven and is at the right hand of God, with angels, authorities, and powers having been subjected to Him" (1 Peter 3:22). Jesus's power is greater than any other power.
