Therefore, when the LORD heard, he was full of wrath; a fire was kindled against Jacob; his anger rose against Israel, because they did not believe in God and did not trust his saving power. Psalms 78:21–22, ESV
There are only two groups of people in the world. There are Christians, the elect, and everyone else, the non-elect. What separates them? What is the difference? It is not that different streams of faith, as new agers and the “emergents” say, which are all equal and going to the same place and color people in different ways. No, that is what universalists of every variety are selling, but that is most definitely not what God’s Word explicitly says. No, the difference between those in Christ and everyone else is that the former are possessors of faith, which is the Greek word πιστις, which is transliterated as pistis. It and its many grammatical forms are translated as “assurance,” “faith,” “belief,” et cetera throughout the New Testament. Before we define “unbelief,” let us define biblical faith, πιστις, so that we can see very clearly what marks the true believer from the false professor.