“Today, if you hear his voice,
8 do not harden your hearts
as you did in the rebellion,
during the time of testing in the wilderness,
9 where your ancestors tested and tried me,
though for forty years they saw what I did.
Unbelief causes us to disobey and disobedience leads to rebellion. For 40 years in the wilderness, the Israelites witnessed and experienced God’s glory, power and providence. God cared for them like a father would to his children. But they easily forgot how God led them. They easily forgot the signs and wonders that, the mighty hand that save them from bondage. These caused them to complain, doubt God and eventually – to rebel against Him. They don’t believe that God is able to care and provide for their needs. They always complain to Moses for bringing them out of Egypt and into the desert to die of hunger or thirst.
12 See to it, brothers and sisters, that none of you has a sinful, unbelieving heart that turns away from the living God. 13 But encourage one another daily, as long as it is called “Today,” so that none of you may be hardened by sin’s deceitfulness.
The only way to cure rebellion is to surrender our will to God on a daily basis. Let us remember and contemplate on God’s goodness and faithfulness in keeping His promises and fill our hearts with thanksgiving. Forgetting His goodness towards us is being ungrateful. An ungrateful heart would never find rest, because the heart is full of deceit and unbelief. It’s like a dirt road, it hardens when it is traveled or trampled always. If we allow sin to pass and trample our hearts time and time again, then it will be as hard as a stone.