Devotion: Colossians 3:15
"And let the peace of Christ rule in your hearts..."
(Read Colossians 3:12-17)
It is not the inward peace of the individual with reference to one's own self for his own personal advantage that Paul exhorts to peace; but, it is the inward peace that one has towards others, free of all bitterness and evil-thinking, primarily and especially with reference to fellow believers.
One's personal peace is contingent upon having peace towards and with others, fulfilling Jesus' prayer that we be one (John 17).