1987 Constitution of the Philippines
Section 7.
No person shall be appointed Member of the Supreme Court or any lower collegiate court unless he is a natural-born citizen of the Philippines. A Member of the Supreme Court must be at least forty years of age, and must have been for fifteen years or more, a judge of a lower court or engaged in the practice of law in the Philippines.
The Congress shall prescribe the qualifications of judges of lower courts, but no person may be appointed judge thereof unless he is a citizen of the Philippines and a member of the Philippine Bar.
A Member of the Judiciary must be a person of proven competence, integrity, probity, and independence.