Numbers 21: 6-9; Matthew 5: 14-16; Alma 46: 11-20; Doctrine and Covenants 64: 41-43

How is Zion an ensign to you?

"6 And the Lord sent fiery serpents among the people, and they bit the people; and much people of Israel died.

7 ¶ Therefore the people came to Moses, and said, We have sinned, for we have spoken against the Lord, and against thee; pray unto the Lord, that he take away the serpents from us. And Moses prayed for the people.

8 And the Lord said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live.

9 And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived." (Numbers 21:  6-9)

"14 Ye are the light of the world. A city that is set on an hill cannot be hid.

15 Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house.

16 Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven." (Matthew 5: 14-16)

"11 And now it came to pass that when Moroni, who was the chief commander of the armies of the Nephites, had heard of these dissensions, he was angry with Amalickiah.

12 And it came to pass that he rent his coat; and he took a piece thereof, and wrote upon it—In memory of our God, our religion, and freedom, and our peace, our wives, and our children—and he fastened it upon the end of a pole.

13 And he fastened on his head-plate, and his breastplate, and his shields, and girded on his armor about his loins; and he took the pole, which had on the end thereof his rent coat, (and he called it the title of liberty) and he bowed himself to the earth, and he prayed mightily unto his God for the blessings of liberty to rest upon his brethren, so long as there should a band of Christians remain to possess the land—

14 For thus were all the true believers of Christ, who belonged to the church of God, called by those who did not belong to the church.

15 And those who did belong to the church were faithful; yea, all those who were true believers in Christ took upon them, gladly, the name of Christ, or Christians as they were called, because of their belief in Christ who should come.

16 And therefore, at this time, Moroni prayed that the cause of the Christians, and the freedom of the land might be favored.

17 And it came to pass that when he had poured out his soul to God, he named all the land which was south of the land Desolation, yea, and in fine, all the land, both on the north and on the south—A chosen land, and the land of liberty.

18 And he said: Surely God shall not suffer that we, who are despised because we take upon us the name of Christ, shall be trodden down and destroyed, until we bring it upon us by our own transgressions.

19 And when Moroni had said these words, he went forth among the people, waving the rent part of his garment in the air, that all might see the writing which he had written upon the rent part, and crying with a loud voice, saying:

20 Behold, whosoever will maintain this title upon the land, let them come forth in the strength of the Lord, and enter into a covenant that they will maintain their rights, and their religion, that the Lord God may bless them." (Alma 46: 11-20)

"41 For, behold, I say unto you that Zion shall flourish, and the glory of the Lord shall be upon her;

42 And she shall be an ensign unto the people, and there shall come unto her out of every nation under heaven.

43 And the day shall come when the nations of the earth shall tremble because of her, and shall fear because of her terrible ones. The Lord hath spoken it. Amen." (Doctrine and Covenants 64: 41-43)

And here's the commentary entitled: "Zion shall be “an ensign unto the people.”: 

"An ensign is “a flag or standard around which people gather in a unity of purpose or identity” (Guide to the Scriptures, “Ensign,” Gospel Library). How has Zion—or the Lord’s Church—been like an ensign to you? Consider these other examples of things that are held up, like an ensign, to bless the people: Numbers 21:6–9; Matthew 5:14–16; Alma 46:11–20. Look for other ways the Lord describes Zion in Doctrine and Covenants 64:41–43.

See also “Let Zion in Her Beauty Rise,” Hymns, no. 41."

Zion—or the Lord’s Church—has indeed been like an ensign to me and to many others. The doctrines and principles of the gospel of Jesus Christ I've been learning in the Lord's Church have been guiding and transforming my life as I was growing up and until now. They have been my standard as I strive to become more like my Lord and Savior Jesus Christ who embodies them. 

Other ways the Lord describes Zion in Doctrine and Covenants 64:41–43: 

• Zion shall flourish.
• The glory of the Lord shall be upon Zion.
• Zion shall be "an ensign unto the people".
• People shall come unto Zion out of every nation under heaven.