reviving the soul

"Every day with Jesus is not sweeter than the day before. We know it from experience and we know it from Scripture. For David says in Psalm 19:7, “The law of the LORD is perfect, reviving the soul.” If every day with Jesus were sweeter than the day before, if life were a steady ascent with no dips in our affection for God, we wouldn’t need to be re-vived."

John Piper, Desiring God