Elder David A. Bednar - Put On Thy Strength, O Zion

 Teaching the Parable of the royal marriage feast, Elder Bednar explained - 

"As the king entered the wedding hall, he surveyed the audience and immediately noticed that one conspicuous guest was not wearing a wedding garment. The man was brought forward, and the king asked, “Friend, how camest thou in hither not having a wedding garment? And he was speechless.”14 In essence, the king asked, “Why are you not wearing a wedding garment, even though one was provided for you?”

The man obviously was not dressed properly for this special occasion, and the phrase “And he was speechless” indicates that the man was without excuse."

"A Christian author, John O. Reid, noted that the man’s refusal to wear the wedding garment exemplified blatant “disrespect for both the king and his son.” He did not simply lack a wedding garment; rather, he chose not to wear one. He rebelliously refused to dress appropriately for the occasion. The king’s reaction was swift and decisive: “Bind him hand and foot, and take him away, and cast him into outer darkness; there shall be weeping and gnashing of teeth.”"

"The invitation to the wedding feast and the choice to partake in the feast are related but different. The invitation is to all men and women. An individual may even accept the invitation and sit down at the feast—yet not be chosen to partake because he or she does not have the appropriate wedding garment of converting faith in the Lord Jesus and His divine grace. Thus, we have both God’s call and our individual response to that call, and many may be called but few chosen."

Elder Bednar than teaches - 

"I believe the implication of these verses is quite straightforward. God does not have a list of favorites to which we must hope our names will someday be added. He does not limit “the chosen” to a restricted few. Instead, our hearts, our desires, our honoring of sacred gospel covenants and ordinances, our obedience to the commandments, and, most importantly, the Savior’s redeeming grace and mercy determine whether we are counted as one of God’s chosen."

In other words - 

“Awake, awake; put on thy strength, O Zion.”31

“For Zion must increase in beauty, and in holiness; her borders must be enlarged; her stakes must be strengthened; yea, verily I say unto you, Zion must arise and put on her beautiful garments.”