D&C 132

 The Lord made it clear - 

"Abraham received concubines, and they bore him children; and it was accounted unto him for righteousness, because they were given unto him, and he abode in my law; as Isaac also and Jacob did none other things than that which they were commanded; and because they did none other things than that which they were commanded, they have entered into their exaltation, according to the promises, and sit upon thrones, and are not angels but are gods."  (Doctrine and Covenants 132:37)

Also of His priesthood - 

"...verily I say unto you, my servant Joseph, that whatsoever you give on earth, and to whomsoever you give any one on earth, by my word and according to my law, it shall be visited with blessings and not cursings, and with my power, saith the Lord, and shall be without condemnation on earth and in heaven."  (Doctrine and Covenants 132:48)

All things can be a blessing if commanded by the Lord.