BG 16.23-24
He who, having cast aside the ordinances of the Scriptures, followeth the promptings of desire, attaineth not to perfection, nor happiness, nor the highest goal. Therefore let the Scriptures be thy authority, in determining what ought to be done, or what ought not to be done. Knowing what hath been declared by the ordinances of the Scriptures, thou oughtest to work in this world.