It can be easy to forget all that God has done for us. We do not remember all of the times God has shown love or mercy. We quickly forget those times where grace filled our hearts. This is the state of affairs in the first reading. People have quickly forgotten the promise made to serve the Lord and to reject evil. In fact, even the judges appointed to lead them forget too. The people worship other Gods. They choose not to follow the commandments.
In our own lives too, we can find ourselves rejecting God despite all God does for us. Each day the stark choice to follow or reject God is before us. Every day we can follow God, receive grace and grow in faith. Or, every day we can choose to reject God and go our own way. But our faith tells us rejecting God is not without consequences. God wants to pour out to us his love, mercy, and grace. When we reject God, we receive those consequences of our choices where we receive death and destruction. Ask God for an open heart. Choose God.