The most important issue in the believer's life, at any given moment, is how we think about God. There is nothing more important than how we think about God. That is the main issue in James 1:13-18. For all that James discusses here, the one issue that reigns supreme throughout the entire section is the issue of how we actually think about God. When mindful of temptation, guard your thoughts about God. When mindful of temptation, remember how temptation operates. When mindful of temptation, don't be deceived about God's intentions. The Spirit of God is making plain to us that our thoughts about God must be accurate. We see this in verses 16-18.