Psalm 85:8 I will listen to what God the Lord says; he promises peace to his people, his faithful servants - but let them not turn to folly.
We can have great hope in what God has said because He continue to show us He upholds His promises every day.
He promised peace to His people, those who obeyed the commandments and did what He asked of them – this is our history.
But, it is also our history how mankind has turned to folly, to dumb and foundation-less ways just because we think it is OK.
God asks for faithfulness in return for His faithfulness. Its quite simple!