126. Verse 17. But of the tree of the knowledge [scientia] of good and evil, thou shalt not eat of it; for in the day that thou eatest thereof, dying thou shalt die. These words, taken together with those just explained, signify that it is allowable to become acquainted with what is true and good by means of every perception derived from the Lord, but not from self and the world; that is, we are not to inquire into the mysteries of faith by means of the things of sense and of the memory [per sensualia et scientifica], for in this case the celestial of faith is destroyed.