SEC. 12. The grantee shall not lease, transfer, grant the usufruct of, sell or assign this temporary permit nor the eights and privileges acquired thereunder to any person, firm, company, corporation, or other commercial or legal entity, nor merge with any other company or corporation organized for the same purpose, without the approval of the Congress of the Philippines first had, Provided, That the rights and privileges of this franchise shall be shared with the Philippine Federation of Christian Churches. Any corporation to which this temporary permit may be sold, transferred, or assigned, shall be subject to the corporation laws of the Philippines now existing or hereafter enacted, and any person, firm, company, corporation or other commercial or legal entity to which this temporary permit is sold, transferred, or assigned shall be subject to all the conditions, terms, restrictions and limitations of this temporary permit as fully and completely and to the same extent as if the temporary permit had been originally granted to the said person, firm, company, corporation or other commercial or legal entity."