"“Be not therefore anxious for the morrow.... Sufficient unto the day is the evil thereof.”— Matthew 6:34 , R. V. If you have given yourself to God, to do His work, you have no need to be anxious for tomorrow. He whose servant you are, knows the end from the beginning. The events of tomorrow, which are hidden from your view, are open to the eyes of Him who is omnipotent. MB 100"
"Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof."
Ellen White directly references Matthew 6:34 in this passage.
"When we take into our hands the management of things with which we have to do, and depend upon our own wisdom for success, we are taking a burden which God has not given us, and are trying to bear it without His aid. We are taking upon ourselves the responsibility that belongs to God, and thus are really putting ourselves in His place. We may well have anxiety and anticipate danger and loss, for it is certain to befall us. But when we really believe that God loves us and means to do us good we shall cease to worry about the future. We shall trust God as a child trusts a loving parent. Then our troubles and torments will disappear, for our will is swallowed up in the will of God. MB 100.2"
"Trust in the Lord with all thine heart; and lean not unto thine own understanding."
EGW's passage strongly reflects the principle of trusting in God rather than one's own understanding, which is the core message of Proverbs 3:5. The idea of relinquishing control and relying on God's wisdom is central to both passages.
"Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment?"
Both passages address the issue of anxiety and trusting in God's provision. Matthew 6:25 urges against worry about basic needs, while the EGW quote expands on this by connecting worry to a lack of trust in God's management of our lives. The EGW quote amplifies the principle found in Matthew.