(Please read the passage cited above first.)
In this reading, St Paul speaks of dividers, walls, unity and peace.
Without Christ we have no unity or peace: all is confusion, hatred, separation, death and distancing.
Without Christ, we build walls, locks and divisions. We build walls, physical ones, as between the United States and Mexico; social ones, in racism and politics; personal ones, as in not having peace within ourselves; financial ones, as rich versus poor, or management versus workers; and spiritual ones, as between those who call themselves saints and call others sinners. All this we do without Christ.
Christ, however, has come to knock down these walls. Christ’s embrace is to include everyone, without exception. Christ embraces everyone, white and black, rich and poor, citizen and non-citizen, English speakers and Spanish speakers, Democrats and Republicans, Christians and non-Christians. For Christ there are no barriers because Christ welcomes everyone without any distinction whatsoever.
In his body, through his cross and death, Christ has destroyed the distinctions, barriers, separators, dividers and distances that separate one from the other.
Then, you who once were far away from Christ are near to Christ by virtue of the blood of Christ. Christ is our peace. He destroyed hatred and substituted his love and peace. Christ has created in himself from the many separated people one new person by establishing his peace, his love in his life.
There is now no longer stranger or people far away from Christ and God because we are all joined together into a unity with God. As a result, each and every one of us can come close to the Father, through the action of the one Holy Spirit.