A.T. Robertson Commentary Luke 12:51

"Think ye that I am come to give peace in the earth? I tell you, Nay; but rather division:" — Luke 12:51 (ASV)

But rather division (αλλ' η διαμερισμον). Peace at any price is not the purpose of Christ. It is a pity for family jars to come, but loyalty to Christ counts more than all else. These ringing words (Luke 12:51–53) occur in Mt 10:34-36 in the address to the Twelve for the Galilean tour. See discussion of details there. These family feuds are inevitable where only part cleave to Christ. In Matthew we have κατα with the genitive whereas in Luke it is επ with the dative (and accusative once).