Scripture contradicts Dr Leaf
In her books and on social media, Dr Leaf often quotes scripture in an attempt to reinforce her reputation as some form of Biblical expert. Everything's fine when she simply quotes scripture, but problems arise when she tries to interpret it. Like her use of science, Dr Leaf often misquotes or paraphrases scripture, or uses it out of context, in order to try and Biblically justify her tenuous hypotheses.
2 Timothy 1:7
One of Dr Leaf's favourites is 2 Timothy 1:7: “For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.” Dr Leaf interprets the phrases of "spirit of fear" and "a sound mind" as "anxiety" and "mental wholeness" respectively. For example, on the 12th of May 2014, she posted to her social media feeds, “Your mind is all-powerful. Your brain simply captures what your mind dictates. 2 Timothy 1:7” And in her book "Switch on your brain" , she said on page 33, "For now, rest in the assurance that what God has empowered you to do with your mind is more powerful and effective than any medication, any threat, any sickness, or any neurological challenge. The scripture is clear on this: You do not have a spirit of fear but of love, power and a sound mind (2 Tim 1:7).”
Simply checking the verse in its full context, and in a different translation, shows it in a completely different light to the way Dr Leaf promotes it. From the NIV, “I am reminded of your sincere faith, which first lived in your grandmother Lois and in your mother Eunice and, I am persuaded, now lives in you also. For this reason I remind you to fan into flame the gift of God, which is in you through the laying on of my hands. For the Spirit God gave us does not make us timid, but gives us power, love and self-discipline. So do not be ashamed of the testimony about our Lord or of me his prisoner. Rather, join with me in suffering for the gospel, by the power of God.” (2 Timothy 1:5-8)
The Greek word for “fear” in this scripture refers to “timidity, fearfulness, cowardice”, not to anxiety or terror. The Greek word that was translated “of a sound mind” refers to “self-control, moderation”, not to mental wholeness. So Paul is teaching Timothy that God doesn’t make him timid, but full of power, love and self-control. Paul is simply saying that through the Holy Spirit, we have all the tools: power, love and the control to use them, so we don’t have to be afraid.
This scripture has nothing to do with our mental health. It certainly doesn't say that our minds are "more powerful and effective than any medication, any threat, any sickness, or any neurological challenge". Dr Leaf's use of this scripture is misleading.
Another favourite of Dr Leaf's is Proverbs 23:7, "For as he thinketh in his heart, so is he”.
She used this scripture a number of times on her social media feeds, including on the 4/2/2015, “‘The more you believe in your own ability to succeed, the more likely it is that you will. Shawn Achor’ - ‘For as he thinketh in his heart, so is he …’ Proverbs 23:7”, and the 29/5/2015, "Mind In Action: 'Genes cannot turn themselves on or off. In more scientific terms, genes are not 'self-emergent'. Something in the environment has to trigger gene activity.' Dr Bruce Lipton' - That 'something' is your thoughts! Read Proverbs 23:7". Dr Leaf also used the same scripture to try and explain how the woman with the issue of blood managed to obtain her healing [1: p111].
What's interesting is how Dr Leaf only ever uses the first half of this verse. The whole verse (in the King James Version) reads, "For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.”
So what's with the second half of the verse? What’s the eating and drinking half of the verse got to do with our thought life?
The explanation is that this verse has nothing to do with our thought life at all. Dr Leaf has simply been misquoting it for years, and no one checked to see if she’s right. According to the Pulpit commentary found on the Bible Hub website, “The verb here used is שָׁעַר (shaar), ‘to estimate … to calculate’, and the clause is best rendered, ‘For as one that calculates with himself, so is he’. The meaning is that this niggardly host watches every morsel which his guest eats, and grudges what he appears to offer so liberally … He professes to make you welcome, and with seeming cordiality invites you to partake of the food upon his table. But his heart is not with thee. He is not glad to see you enjoy yourself, and his pressing invitation is empty verbiage with no heart in it.” (http://goo.gl/nvSYUh)
Thus, the scripture does not prove that our thoughts define us as Dr Leaf would suggest. Dr Leaf's use of this scripture is misleading.
Another example, on the 26 May 2014 on her social media feeds, Dr Leaf said, "James 1:21 How you react to events and circumstances of your life is based upon your perceptions" and then a week later, “James 1:21 Our thoughts and perceptions have a direct and overwhelmingly significant effect of the cells of our body” (4/6/2014).
Except that James 1:21 actually says, "Wherefore lay apart all filthiness and superfluity of naughtiness, and receive with meekness the engrafted word, which is able to save your souls", and has absolutely nothing to do with our perceptions and our cellular biology.
The same pattern is repeated on social media and in her books. Dr Leaf finds scriptures where one version mentions words like "thinking" or "choice", isolates them from their context and reinterprets them to suit her meaning, rather the actual meaning of the verse in the original language and the original context.
 Leaf CM. Switch On Your Brain : The Key to Peak Happiness, Thinking, and Health. Grand Rapids, Michigan: Baker Books, 2013.