Are there things happening around us that we can't see?

Life is spiritual. It's important that we look at life through the Word of God. God's word written in the scriptures is a light that shines in a dark place. Why do some certain things happen to people that we can't find explanations for? Because the source of the problem isn't physical, but spiritual.

Not all lights work the same. There are some things that can't be seen in natural light. For example, I can't see someone's bone structure just by looking at them under sunlight or the light from an electric bulb. But the X-ray light will reveal all those things. You can't know or understand everything in life if you're trying to use your normal human reasoning. It's only knows and understands the things it can feel, see, touch, taste, or smell. But there's a realm that the 5 senses cannot discern and that's the realm of the spirit.

God's divine actions in our lives and study of His Word are the revealers of that realm to us.

1 Corinthians 4:5
Therefore judge nothing before the time, until the Lord come, who both will bring to light the hidden things of darkness, and will make manifest the counsels of the hearts: and then shall every man have praise of God.

Psalm 119:105
Thy word is a lamp unto my feet, and a light unto my path.