The PCA can have no peace until she contends for purity.
I believe the absence of peace in PCA courts is the product of a lack of purity; we don’t agree on core matters of what it is to be a Reformed Church.
Note how Psalm 122 marvels at the “thrones for judgment…of the House of David” set in Zion immediately before calling the saints to “pray for the peace of Jerusalem.”
Right judgment must be established in the Church before the Church can have peace. To put it another way: purity must be secured before peace can be enjoyed; until the PCA unites to work for the purity of the Church, she will not have peace.