The City Council shall legislate by ordinance. The enacting clause of every ordinance shall be, “Be it Ordained by the City Council of the City of Sweeny, Texas.” Every ordinance enacted by the City Council shall be signed by the Mayor, the Mayor Pro Tern, or by two members of City Council and shall be filed with and recorded by the City Secretary. Every ordinance shall take effect immediately upon its final passage, unless otherwise provided by Law or by the terms of such ordinance.