6 Now these things occurred as examples to keep us from setting our hearts on evil things as they did. 7 Do not be idolaters, as some of them were; as it is written: “The people sat down to eat and drink and got up to indulge in revelry.” 1 Corinthians 10:6-7
Why do people set their hearts on evil things? The easy answer is ‘sin nature’ and “it’s what we do.” It’s also the right answer.
Ever since the Garden of Eden, we have had a natural bent towards sin. We, by nature, gravitate towards sin unless there’s something compelling enough to deter us.
That something for Believers is the Holy Spirit living inside us. I can’t write that enough because it’s the distinction that makes us Believers.