Ephesians 4:22-24 reads (New Jerusalem Bible): "You were to put aside your old self, which belongs to your old way of life and is corrupted by following illusory desires. Your mind was to be renewed in spirit so that you could put on the New Man that has been created on God's principles, in the uprightness and holiness of the truth."
Ephesians 4:22-24 (RSV Bible) "Put off your old nature which belongs to your former manner of life and is corrupt through deceitful lusts, and be renewed in the spirit of your minds, and put on the new nature, created after the likeness of God in true righteousness and holiness."
It would be impossible to "close" St. Peter's Square as the border between two sovereign nations (Italy and Vatican City) is wide open. The border is where the edge of the Square touches the sidewalk in Rome. Step off the sidewalk in Italy and step onto the Square in Vatican City . No Customs, no border guards, no fence.