Spirituality is the barometer of your willingness to allow grace i.e. some power which is greater than yourself, enter your life and guide you along your way. In a room of thousand people, ask each one of them about the meaning of spiritual strength and you will get to know different people have different opinions.
Many people today have started to make their lives revolve around the phrases and words such as spirituality, vibration, energy, self-purpose, highest potential, and intention. The list is endless! People form sentences like, “My purpose is to increase my energy level so that I can reach my greatest goal and attract a wonderful life.” Trust me there are many people who use these sentences.
Spirituality is knowledge about oneness with god and path to peace.
The human takes birth to grow in the path of spirituality and attain oneness with god.
As per veda there are 4 yug