The Supreme Court does not enact laws...They interpret and construe the law, the latter term means to know the intention(we lawyers and lawyers to be call this legislative intent) and spirit of the law. This interpretation, which is properly called judicial precedent or stare decisis, will used by the courts if and when similar facts and similar issue will come out in a specific case. This power of the Supreme Court is part and parcel of the constitutional principle of Judicial Power
Moreover, congress through a legislation, the Civil Code( RA 386), has recognized the principle that Supreme Court rulings has the force and effect of a law.Thus Article 8 of the Civil Code provides that " Judicial decision applying and interpreting the law or the Constitution shall form part of the legal system of the Philippines". The judicial decision being referred to is the one made by the Supreme Court of the Philippines.