"What a God is our God! He rules over His kingdom with diligence and care, and He has built a hedge—the Ten Commandments—about His subjects to preserve them from the results of transgression. In requiring obedience to the laws of His kingdom, God gives His people health and happiness, peace and joy. He teaches them that the perfection of character He requires can be attained only by becoming familiar with His word. CT 454.1 It is written in the prophets: “O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colors, and lay thy foundations with sapphires. And I will make thy windows of agates, and thy gates of carbuncles, and all thy borders of pleasant stones. And all thy children shall be taught of the Lord; and great shall be the peace of thy children. In righteousness shalt thou be established: thou shalt be far from oppression; for thou shalt not fear: and from terror; for it shall not come near thee.” Isaiah 54:11-14 . CT 454.2"
"O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colours, and lay thy foundations with sapphires. And I will make thy windows of agates, and thy gates of carbuncles, and all thy borders of pleasant stones. And all thy children shall be taught of the Lord; and great shall be the peace of thy children. In righteousness shalt thou be established: thou shalt be far from oppression; for thou shalt not fear: and from terror; for it shall not come near thee."
Ellen White directly references Isaiah 54:11-14 in this passage.