If we think about our interactions with others during the day, we may find that we behave differently when we think we are being observed. It is human nature; we are on our best behaviour when we think our employer, superiors, neighbours, friends or others whom we want to impress are watching us. In wanting others to think better of us, we even go as far as to hide any flaws.
Our life is an open book: Whether we realise it or not, we are always being watched: By God. Few people go through life conscious of the fact that God is always with us. What we hide from others is an open book to God, as God is all knowing. What if we knew that God was watching? Would we lead more virtuous lives?
To begin to comprehend this reality, let us take the example of a computer network. The master computer is linked up with all the individual computers in the network. The operator of the master computer can know what is going on with each individual computer simultaneously. Individual operators may or may not be aware that the operator of the master computer has access to their computers and knows what they are up to. If they knew someone had access to their computer, they would be more cognisant of their work.
Likewise, God is the master operator of the network of creation and our souls are the individual computers. Everything we think, say, and do is known to God. If we were aware that God hears our thoughts and words, and watches our deeds, imagine how quickly our behaviours would improve.