This verse gives us some insight into what is important to the people of Moab.
Imagine, that you are living in a land that is flooding, so many have died that the waters are full of blood...What would you grab as you flee in an attempt to escape the destruction? What we grab first, what we hold onto, is what's most precious to us.
Jeremiah 48 tells us that Moab has had an easy life from their youth and that they "had settled on their lees, they had not been emptied from vessel to vessel, nor gone into captivity: therefore his taste remains in him, his scent has not changed."
The natural man is concerned about "what shall we eat, what shall we drink, what shall we wear?" His taste is for the things of this world. The people of Moab desired fleshly things and they had set their heart on fleshly goals. Even when they are running for their lives...they grab and hold onto their possessions. Because that's where they find their security...they have trusted in their wealth and strength, in their works and in their treasures and they even risk their lives to grab it as they flee.
"And their scent has not changed"...they still smell as bad as ever.
But the gospel of Jesus Christ changes people. The gospel of Jesus Christ purifies. We use to think like the world and smell like the world too...but we no longer Matthew 5:6 after the things of this world Blessed [are] they which do after righteousness: for they shall be filled." And we don't smell like the world either
2 Corinthians 2:16a "For we are unto God a sweet savour of Christ, in them that are saved..."
Standing in Him,