"Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God. But exhort one another every day, as long as it is called 'today,' that none of you may be hardened by the deceitfulness of sin." (Hebrews 3:12-13)Creeping, slowly and steadily, unbelief was ready to pounce on the early Jewish believers. They were, after all, outcasts in their culture, for their acceptance of Jesus as Messiah made them different, societal pariahs. So the author of Hebrews compared their generation to Moses'. When Moses took the Hebrew people out of Egypt, it was with God's plan to bring them into the Promised Land. But, on their way to the new territory God had promised them, unbelief took hold of their hearts and, sadly, they were kept from God's land. God still loved them and worked in their midst -- he gave them the law, the priesthood, and the manna -- but for forty years they lived outside of God's best. Only the next generation, led by Joshua, filled with belief, would experience God's desire and enter the Promised Land.The author of Hebrews used that Exodus generation to exhort the believers of his day. He wanted them to guard against creeping unbelief which would lead them to fall away from the living God. He does not mean a loss of salvation, for Israel's wilderness-generation was still in covenant with God, but the loss of victory and blessing. Their unbelief was a lack of trust. When a believer is hesitant to lean on God, to trust him, their lives, like that Exodus generation, are only a shadow of what they could be. So, here, Hebrews gives us four main ways to combat creeping unbelief.1. Take Care to Avoid the Unbelieving Heart (3:12)It was the evil heart of unbelief which kept the wilderness-generation out of the promised land. Moses sent twelve spies into the land for forty days. Upon their return, they reported that it was a good territory, but filled with giants. Two of them dismissed the giants as small obstacles for God, but the other ten spies told the people to tremble because of them. "We are as grasshoppers in their sight," they said, and this grasshopper speech filled the consciousness of the congregation. Soon, they refused to go in. Unbelief kept them from God's best for their lives.We must take care to cultivate environments of belief, rather than mistrust in the living God. He is worthy of our trust, for he is always good and faithful, but our bodies of sin will often feel otherwise about him.Watch out for this halfway spirit, the one which has been delivered from slavery to sin, forgiven by God through the blood of Christ, but never able to go further. Don't let career pursuits or philosophical questions stop you from going all the way into God's best by trusting him. He is sturdy, worth leaning the weight of our lives upon. Though we might quickly trust our own mindset over God's revealed word, we must work hard to remind ourselves how our view is limited. A sheep does not know the plans and strategies of his shepherd. Livestock is incapable of the advanced thoughts of a human. Nor can we always understand God and his ways. We must lean on and trust in him more than our own senses.2. Exhort One Another Every Day (3:13)We must deal with the heart of unbelief, and we need a community to do so. It is in a relationship with other believers that we find the encouragement and grace we need for the fight. We need to speak into one another's lives, building up the other for the life of endurance.Daily exhortation requires honesty. We must allow room for difference in our brothers and sisters in Christ, of course, and we must approach one another with total humility, but we must also use tactful, yet frank, honesty. Paul said, "Brothers and sisters, if someone is caught in a sin, you who live by the Spirit should restore that person gently" (Galatians 6:1 NIV). Sometimes a good and honest word is in order.Daily exhortation requires frequency. It says, "Exhort one anot