"“Lay not up for yourselves treasures upon earth.”— Matthew 6:19 . Treasure laid up on earth will not endure; thieves break through and steal; moth and rust corrupt; fire and storm sweep away your possessions. And “where your treasure is, there will your heart be also.” Treasure laid up on the earth will engross the mind to the exclusion of heavenly things. MB 88"
"Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal:"
Ellen White directly references Matthew 6:19 in this passage.
"Jesus said, “When thou fastest, anoint thine head, and wash thy face; that thou appear not unto men to fast, but unto thy Father which is in secret.” Matthew 6:17, 18 . Whatever is done to the glory of God is to be done with cheerfulness, not with sadness and gloom. There is nothing gloomy in the religion of Jesus. If Christians give the impression by a mournful attitude that they have been disappointed in their Lord, they misrepresent His character and put arguments into the mouth of His enemies. Though in words they may claim God as their Father, yet in gloom and sorrow they present to the world the aspect of orphans. MB 88.1"
"But thou, when thou fastest, anoint thine head, and wash thy face; That thou appear not unto men to fast, but unto thy Father which is in secret: and thy Father, which seeth in secret, shall reward thee openly."
EGW quotes Matthew 6:17-18 directly and then elaborates on the principle of not making religious practices a show for others, which is the central theme of the verse.
"Christ desires us to make His service appear attractive, as it really is. Let the self-denials and the secret heart trials be revealed to the compassionate Saviour. Let the burdens be left at the foot of the cross, and go on your way rejoicing in His love who first loved you. Men may never know of the work going on secretly between the soul and God, but the result of the Spirit's work upon the heart will be manifest to all, for He “which seeth in secret, shall reward thee openly.” MB 88.2"
"But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly."
EGW directly quotes and applies the principle from Matthew 6:6 about God rewarding those who serve Him in secret. The connection is undeniable.
"The love of money was the ruling passion in the Jewish age. Worldliness usurped the place of God and religion in the soul. So it is now. Avaricious greed for wealth exerts such a fascinating, bewitching influence over the life that it results in perverting the nobility and corrupting the humanity of men until they are drowned in perdition. The service of Satan is full of care, perplexity, and wearing labor, and the treasure men toil to accumulate on earth is only for a season. MB 88.4"
"For the love of money is the root of all evil: which while some coveted after, they have erred from the faith, and pierced themselves through with many sorrows."
EGW's discussion of the love of money and its corrupting influence aligns with the warning in 1 Timothy 6:10. While not a direct quote, the thematic overlap is significant and clear.