First. Lennox states, "The temptation [in the Garden of Eden] surrounded the human satisfaction of three desires: the basic appetite for food, the desire for aesthetic satisfaction, and intellectual desire for human flourishing ('You shall be as God')." The question asked of Eve, "Did God really say...?" was crafted to get Eve to question God's word. And I think the sly, "You won't die," that followed it was really insidious. It insinuates: "Are you sure? Do you really trust that He told you the truth? Maybe He was withholding something good from you."
I see parallels between this and situations when we doubt God because He hasn't answered our prayers in the way we wanted or hasn't given us what we wanted. They may not be inherently selfish prayers, such as praying for healing for ourselves or for a loved one. But when the healing doesn't come, doubt can start to creep in and the whispers start: "Does God really love me? If He does, then why wouldn't He do this for me? Why would He let me continue to suffer like this? Why would He choose to withhold His blessing from me by not granting me this thing?"
Lennox says, "The biggest lesson is that since sin entered the world through human failure to trust God and grasping at independence from God, the way back to God will involve learning to trust Him and His word." And so, "the enemy will do everything he can to undermine your confidence in the word of God and His truth." Which, I remember Timothy Keller saying, part of it is somehow getting us to think or to believe that we know better than God. That we know what our lives are supposed to look like, and this is not how things were supposed to go, so something is wrong and God ought to fix it to be the way I think it should be, the way I want it to be.
Surrendering is hard, but I think if we are serious about that line in the Lord's Prayer, "Thy will be done on earth as it is in heaven," then it means we do have to reconcile ourselves to His will, even when it doesn't align with our will or what we think is best for ourselves. For so many years I would recite the Lord's Prayer without even thinking about what I was saying... but really, if we are praying that God's will be done on earth, that also means God's will be done in my life and by extension, it means my will might not get done. Urgh. No one likes to think about that, I know.
Second. John Lennox said that for highly educated or highly knowledgeable and/or intellectual people, the danger would be idolatry of the mind. Why? Because we can come to depend on our mind, our arguments, our ability to rationalise and reason things out, rather than depending on God. The contrast is clear: "[Idolatry] is where I trust my mind and my intellectual ability and then I use God when I get stuck. Christianity is when I trust God and use my mind."
He used the example of King Solomon to whom God gave great wisdom but who, despite all his wisdom, still made poor decisions, pursuing power, wealth, and foreign alliances, securing the latter through hundreds of wives and concubines. As I was thinking about this, it struck me that although God granted Solomon wisdom, the wisdom that Solomon ended up using was his own and not God's. What I mean is, when he used his wisdom, he was using rational thinking (having more allies = better protection) which is a human kind of wisdom; he wasn't being guided by God's wisdom.
Paul wrote in the New Testament that "the foolishness of God is wiser than human wisdom" (1 Cor 1:25), referring to the idea that it seemed foolish to believe that Christ, who had been sentenced to a painful death as a criminal and therefore appeared utterly wretched and powerless in human eyes, could possibly be the Saviour of all mankind. God's wisdom often does look like foolishness because "we live by faith, not by sight" (2 Cor 5:7) so sometimes things just don't make sense if we try to reason them out through a human lens.
I felt personally convicted when Lennox talked about idolatry of the mind because, well, I also like to pride myself on my intellect and my logic and my ability to rationally reason things out. It's a good question to ask myself, the question Lennox posed: Do I trust God and use my mind, or do I trust my mind and use God? I often go back to that verse about walking by faith, not by sight, and remind myself that what I see is not what all there is. Therefore, if I base my deductions and conclusions on only what I see and what I know, it may very well be a flawed equation.
One example I've used when talking with friends is when a friend lamented that she is a bit too old to be in the job market because she's in her late forties and the conventional wisdom is that companies don't like to hire people this age because they'd have to pay a higher salary compared to hiring someone with less experience. I told her not to look at statistics and probabilities because that is human wisdom, but we need to account for the unseen hand of God and trust that He will open doors for her to be where He wants her to be.
Some people might think I'm being naïve or too idealistic. But I absolutely do believe that if God wanted you to have that job, even if it doesn't make logical sense, you will have that job. I'm not saying the job will drop from heaven or that you won't have to apply for it and interview for it just like you would with any other job. But I'm saying that if we really believe that God has a plan for our lives and has written each day of our lives in His book before we even came to be (Psalm 139:16), we have to remember that He's working behind the scenes, and trust Him to do His thing. Not just look around us and see all the obstacles, as Elisha's servant did in 2 Kings 6. The servant was full of fear because the king had sent a great army to surround the city, trapping Elisa and his servant inside. But when the servant's eyes were opened, he saw that there were horses and chariots of fire all around Elisha. So... we live by faith, not by sight. We don't see the chariots of fire, but we have to have faith that they are there. That God is there. He confounds human wisdom. Trust Him, not trust my mind, my abilities, my knowledge, or whatever else.