During old times, Hindus abided by Dharma and had pride in Dharma. Hence, the phrase ‘धर्मो रक्षति रक्षितः । i.e. Dharmo Rakshati Rakshitaha (Manusmruti, 8.15), meaning, one who protects Dharma is protected by Dharma, meaning God, becomes applicable to them. Hindus of the present times neither abide by Dharma nor do they have pride in Dharma. Therefore, for their protection during the forthcoming adverse times and for protection of Dharma, they are required to be told to perform spiritual practice.
-Sachchidananda Parabrahman (Dr) Jayant Athavale