"In the darkest days, when appearances seem most forbidding, have faith in God. He is working out His will, doing all things well in behalf of His people. The strength of those who love and serve Him will be renewed day by day. MH 482.1"
"But they that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint."
The EGW passage directly echoes the principle of renewed strength through faith in God, which is the central theme of Isaiah 40:31.
"He is able and willing to bestow upon His servants all the help they need. He will give them the wisdom which their varied necessities demand. MH 482.2"
"If any of you lack wisdom, let him ask of God, that giveth to all men liberally, and upbraideth not; and it shall be given him."
Both passages highlight God's willingness to provide wisdom to those who ask. James 1:5 is a direct promise of wisdom, and the EGW passage reinforces this by stating God is 'able and willing' to give wisdom according to need.
"And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work:"
Both passages emphasize God's ability and willingness to provide what is needed. EGW's statement about God bestowing help and wisdom echoes the idea of God's grace providing sufficiency in all things.