The Two Swords of Peter

In the sensus plenior, swords must represent the same thing everywhere they occur. Therefore the sword, in this method of interpretation, represents the word of God. They were two two-edged swords reminiscent of the fiery swords held by the angels guarding the way back to the garden of Eden.

The four edges represent the four voices of God as Prophet, Priest, King and Judge. The two swords 'are sufficient' as there are no other 'voices' of God.

It is of particular note that in telling Peter to put the sword away, he tells him that he must fulfill the Word. Prior to the cross, the Word was hidden in parables so that they would not believe. He had to die alone and desolate according to the scriptures. So the sword/word was concealed until after the cross.