I didn't realize the nature of this type of worship nor did I realize the "occultic" background of many of Freemasonry's rituals and practices until much later in life. Then, after becoming an Adventist, to see what Mrs. White had to say regarding Freemasonry was indeed eye-opening.
Now, before the time comes when you must render up your account to God, I urge you to give heed to His word, "Lay up for yourselves" a "treasure in the heavens" (Matt. 6:20; Luke 12:33), not in secret societies. Consider that there is only one Proprietor of the universe, and that every man, with his time, his intellect, his resources, belongs to the One who has paid the ransom for the soul. God has a righteous claim to constant service and supreme affection. God's will, not your pleasure, is to be your criterion. And though you should accumulate a fortune less rapidly, you are laying up treasure in heaven. Who of the church is resolved to maintain his spirituality? Who will develop an experience that reveals Christian fervor, persevering energy? Who, like Jesus, will not fail nor be discouraged, not in grasping means for the service of self, but in laboring together with God? {2SM 137.1}
Those who stand under the bloodstained banner of Prince Immanuel cannot be united with the Free Masons or with any secret organization. The seal of the living God will not be placed upon anyone who maintains such a connection after the light of truth has shone upon his pathway. Christ is not divided, and Christians cannot serve God and mammon. The Lord says, "Come out from among them, and be ye separate, . . . and touch not the unclean thing; and I will receive you, and will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty" (2 Cor. 6:17, 18).--Letter 21, 1893. {2SM 140.1}