"To unify the church" means to bring together or unite different factions or groups within the church to work towards a common goal or purpose. Full definition
And yet they are inseparable because they reciprocally reinforce each other: the more unified the church, the better it serves «wholeness and reconciliation» (which are inseparable from justice). (religion-online.org)
Perhaps in a more unified Church my label, «one great theologian among many,» may prove in the end to be a cipher for that nobler title. (firstthings.com)
And it is the unified church that is the body of Christ, doing on this earth what he began to do while He was here. (redeeminggod.com)