"Disguise it as they may, the real cause of doubt and skepticism, in most cases, is the love of sin. The teachings and restrictions of God's word are not welcome to the proud, sin-loving heart, and those who are unwilling to obey its requirements are ready to doubt its authority. In order to arrive at truth, we must have a sincere desire to know the truth and a willingness of heart to obey it. And all who come in this spirit to the study of the Bible will find abundant evidence that it is God's word, and they may gain an understanding of its truths that will make them wise unto salvation. SC 111.1"
"And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil."
Both passages address the idea that a love of sin hinders one's ability to accept truth. John 3:19 states that people love darkness rather than light because their deeds are evil, while EGW states that the love of sin causes doubt and skepticism.
"And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus."
Both passages connect scripture with wisdom and salvation. 2 Timothy 3:15 states that the scriptures are able to make one wise unto salvation, and EGW states that studying the Bible in the right spirit will lead to an understanding of its truths that will make one wise unto salvation.
"If any man will do his will, he shall know of the doctrine, whether it be of God, or whether I speak of myself."
Both passages link obedience to God's will with understanding truth. John 7:17 states that if anyone wills to do God's will, they will know the doctrine, while EGW states that a willingness to obey the requirements of God's word is necessary to arrive at truth.
"Christ has said, “If any man willeth to do His will, he shall know of the teaching.” John 7:17 , R.V. Instead of questioning and caviling concerning that which you do not understand, give heed to the light that already shines upon you, and you will receive greater light. By the grace of Christ, perform every duty that has been made plain to your understanding, and you will be enabled to understand and perform those of which you are now in doubt. SC 111.2"
"If any man will do his will, he shall know of the doctrine, whether it be of God, or whether I speak of myself."
Ellen White directly references John 7:17 in this passage.
"There is an evidence that is open to all,—the most highly educated, and the most illiterate,—the evidence of experience. God invites us to prove for ourselves the reality of His word, the truth of His promises. He bids us “taste and see that the Lord is good.” Psalm 34:8 . Instead of depending upon the word of another, we are to taste for ourselves. He declares, “Ask, and ye shall receive.” John 16:24 . His promises will be fulfilled. They have never failed; they never can fail. And as we draw near to Jesus, and rejoice in the fullness of His love, our doubt and darkness will disappear in the light of His presence. SC 111.3"
"O taste and see that the Lord is good: blessed is the man that trusteth in him."
Ellen White directly references Psalms 34:8 in this passage.
"Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full."
Ellen White directly references John 16:24 in this passage.