when anyone preaches to you without mentioning Jesus Christ

do not let the congregation of God be blasphemed because of the behaviour of a few foolish persons. For Woe to him who makes anyone blaspheme my name without a cause.   Be deaf therefore when anyone preaches to you without mentioning Jesus Christ, who was of the family of David, who was truly born of Mary, who truly ate and drank, was truly persecuted under Pontius Pilate, was truly crucified and died in the sight of those in heaven and on earth and under the earth; who was also truly raised from the dead, when his Father raised him up — just as his Father will raise us up, believers in Christ Jesus without whom we have no true life.

-- From St Ignatius of Antioch's letter to the Trallians