Colossians 3:15

And let the peace of Christ rule in your hearts, to the which also ye were called in one body; and be ye thankful.

The peace of Christ ... according to Peake means the subjective peace within the Christian which has been bestowed upon him through his relationship with Christ. "It is the peace which Christ gives."[38] Ashby noted that it is "peace" in this passage that has the function of the "girdle," a function regarded as belonging to "love" in the parallel place in Ephesians. Paul's mind was not in a straitjacket, and his use of words in slightly different senses "reveals not a different writer but the working of the apostle's mind along similar but not identical lines."[39]

And be ye thankful ... It is strange, in a way, that Paul was so insistent upon thanksgiving as a grace enthusiastically and constantly exhibited by the Christian. The Lord's Prayer does not contain a single note of thanksgiving, except in the comprehensive word "Hallowed be thy name"; but Paul made thanksgiving the ever-present mark of Christian living. This does not mean that there was a difference in the teachings of Christ and Paul, but that "The Lord's Prayer" belonged to that period before the kingdom of Christ was established, and that the teachings of Paul belong to the joyful era of the kingdom itself.

[38] A. S. Peake, op. cit., p. 541.

[39] Ernest G. Ashby, op. cit., p. 488.