In any proceedings for the building or repairing of a church or manse the sheriff shall inquire, with such assistance of architects or other professional persons as he shall think proper, into the truth of the allegations contained in the petition; and if he shall be satisfied that, in accordance with the law as at present existing, a church or manse should be built, or that repairs are necessary, he shall pronounce a finding accordingly: Provided always, that, if he see cause, the sheriff may dismiss the petition.