In Acts 6 a need arises in the community that brings a brief crisis… There is a perceived division in the church among the treatment of widows. This is a gospel crisis, either Christ’s atonement is for all (the far off and the near) or its just for the near.
The Apostles address the issue by selecting men of good reputation to address the need (and preserve the integrity of the church’s gospel witness). This also preserves the ministry of the gospel. The kingdom does not stop advancing because of inner turmoil.