See Jeremiah 31:31-34 and Luke 22:14-23. This is language first used in Jeremiah's promise of rescue and renewal of the exiled people of God in Babylon. It promises a coming day when God would make a new covenant unlike the one which Israel had broken.
The fear of the Lord leads to life, and whoever has it rests satisfied; he will not be visited by harm. Psalm 145:16 ESV ...
“For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life....
... so that, with the eyes of your heart enlightened, you may know what is the hope to which he has called you, what...