What are the consequences of unbelief according to Scripture?

The consequences of unbelief are starkly outlined in various passages of Scripture. In John 3:36, it states that whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him. This signifies that those entrenched in unbelief are not only separated from God but also under His judgment. Moreover, the examples of the Israelites in the wilderness serve as a cautionary tale; due to their unbelief, they were denied entry into Canaan (Hebrews 3:19). Ultimately, the mark of unbelief is its nature as a damning sin, emphasizing the need to embrace faith for reconciliation with God.