God gave Adam and Eve a neutral spirit and free moral agency; they chose the Tree of the Knowledge of Good and Evil, predisposing their offspring to sin.
Sin creates estrangement from God, causing us to fail in everything we attempt. Sin always produces separation; it never heals, but causes death.
No one seems to talk about sin anymore, but it still exists and continues to wreak havoc! Scripture describes sin and its great effects in our lives.
Israel's trek was not only a physical journey, but a mental wandering caused by rejecting God's leadership. The potential to sin is a test of resolve.
To counteract complacency, Hebrews warns against neglecting God's invitation of salvation, which He does not guarantee until sanctification has run its course.
If we are going to search for truth, we should not be seeking it in the philosophies of men, but rather in the fullness of truth found in God's revelation.