God can be sensed at any time. When speaking of the purity of God, it can be described as the feeling of oneness with everything within and around you. This can be sensed when a person is complete.
To be complete is to be in touch with your True Self and to fully accept your physical character. Along with completely knowing yourself, you will need to do the same with your surrounding environment.
This brings a comfort level that varies from person to person. In being still and present without distracting the mind, you gain the ability to sense God’s purity.