Don’t be deceived. Where truths are not plain to see, people tend to deviate from them. Many truths suffer a great deal because of their intricacy. False teachings may be so similar that it is hard to distinguish them. Human nature is prone to error; and, therefore, when truth is hard to discover, we content ourselves with our own prejudices. All truths are surrounded with such difficulties, so that those who want to doubt easily stumble: “This is a hard teaching. Who can accept it?” (that is, understand it) (John 6:60); and then (verse 66), “From this time many of his disciples turned back and no longer followed him.” When there is something to justify our prejudices, we think we are safe enough. God leaves such difficulties as a stumbling-block for those who want to be offended. Truth is presented in such a way that though it is clear enough for those who want to know, it is obscure enough to harden other people in their own disbelief. People want to be spared the trouble of prayer, study, and discussion. They are loath to “cry aloud for understanding” (Proverbs 2:3); they love an easy, short route to truth, and therefore run with those mistakes that come to hand, vainly imagining that God does not require belief about those things that are difficult to understand. They do not look for what is sound and solid but what is plausible and at first sight coincides with their thoughts and understanding.

~Thomas Manton. An Exposition of the Epistle of James~ "But each one is tempted when by his own evil desires he is lured away and enticed. Then after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death. Do not be deceived, my beloved brothers." (James 1:14-16)