What does it mean that God is holy?
Here's the answer:
Saying God is holy means that He is sinless and perfect.
Sometimes the Bible uses the word holy to describe God. Saying God is holy means that He is sinless and perfect. It also means He is separated from all living things because He is above all things and is the Creator who deserves our worship. Because God is holy (or sinless and perfect), we can worship Him and praise Him. We should never worship anyone or anything else.
All people are sinners, so we can’t be holy like God (see Romans 3:23). But God does want Christians to live differently from the people who don’t believe in Him. This means we do our best to follow and obey God. When we do that, the people around us will see that we are different—in a good way!
"Holy, holy, holy is the LORD who rules over all. The whole earth is full of his glory" (Isaiah 6:3).
"The God who chose you is holy. So you should be holy in all that you do" (1 Peter 1:15).