And who was it who rebelled against God, even though they heard his voice? Wasn’t it the people Moses led out of Egypt? And who made God angry for forty years? Wasn’t it the people who sinned, whose corpses lay in the wilderness? And to whom was God speaking when he took an oath that they would never enter his rest? Wasn’t it the people who disobeyed him? So we see that because of their unbelief they were not able to enter his rest. - Hebrews 3:16-19These passages provide yet another clear correlation between disobedience and unbelief. In fact, unbelief is depicted as disobedience and sin. Belief and unbelief is not determined simply by our thoughts, but more clearly by our actions – how we live.
Ongoing sin and disobedience reveals a hardened heart that is turned from God. As much as someone wants to think they love God, if they are living a life characterized by disobedience and littered with sin, then they are fooling themselves.
The result of living a life of unbelief has huge eternal consequences. If we want to "enter His rest," then we had better not turn away from the living God in either thought or in deed. May we “not be found to have fallen short of it.”