In order to proceed, we must first define the word "endowment". I like the way dictionary.com defines the word: "an attribute of mind or body; a gift of nature" Dear reader, pay careful attention to the words "attribute" and "gift". President Brigham Young defined the LDS Endowment in these words. Said he, "Your endowment is, to receive all those ordinances in the House of the Lord, which are necessary for you, after you have departed this life, to enable you to walk back to the presence of the Father, passing the angels who stand as sentinels, … and gain your eternal exaltation in spite of earth and hell (JD 2:31)."
"I spent the day in the upper part of the store . . . instructing . . . in the principles and order of the Priesthood, attending to washings, anointings, endowments and the communication of keys pertaining to the Aaronic Priesthood, and so on to the highest order of the Melchizedek Priesthood, setting forth the order pertaining to the Ancient of Days, and all those plans and principles by which any one is enabled to secure the fullness of those blessings which have been prepared for the Church of the First Born, and come up and abide in the presence of the Elohim in the eternal worlds (HC 5:1-2)."
"The temple ordinances encompass the whole plan of salvation, as taught from time to time by the leaders of the Church, and elucidate matters difficult of understanding. . . . The endowment and the temple work as revealed by the Lord to the Prophet Joseph Smith … fall clearly into four distinct parts: The preparatory ordinances; the giving of instruction by lectures and representations; covenants; and, finally, tests of knowledge. I doubt that the Prophet Joseph, unlearned and untrained in logic, could of himself have made the thing so logically complete (“Temple Worship,” The Utah Genealogical and Historical Magazine 12 [April 1921]: p. 58)."
"The ordinances of the endowment embody certain obligations on the part of the individual, such as covenant and promise to observe the law of strict virtue and chastity, to be charitable, benevolent, tolerant and pure; to devote both talent and material means to the spread of truth and the uplifting of the race; to maintain devotion to the cause of truth; and to seek in every way to contribute to the great preparation that the earth may be made ready to receive her King,—the Lord Jesus Christ. With the taking of each covenant and the assuming of each obligation a promised blessing is pronounced, contingent upon the faithful observance of the conditions (The House of the Lord, p. 100)."