When iron is exposed to oxygen and moisture the oxygen combines with the metal, forming a new compound called iron oxide – more commonly known as rust. Metal is consumed when it becomes rusty. In a similar fashion negativity eats away on people.
Exposed to darkness for longer periods of time, it is hard to remain optimistic. A bad situation always looks worse at night. Under the influence of darkness we are driven to make decisions we later regret. When God created light He overpowered the darkness – we always need to remember that. Holding on to the Lord we are able to see in the dark. He has a way for us.
Jesus is asking us: What is important to us? Where do we put our time and energy? Do we invest ourselves fully into amassing transient treasures? This kind of wealth is disappointing, to say the least. Materialism does not give us the kind of satisfaction our soul is looking for.
Our God treasures us; His love for us is timeless – and ideally this goes both ways. The treasure trove of His love is not subject to rust; and nobody can take His love away from us – not now, not ever.