There are those who mistakenly categorize Jews as religious and non-religious.

According to our Torah, there is no Jew who is not religious. All Jews are believers from birth.

Superficial, external factors may bring them to go against their true selves. But their hearts are always awake and open to Torah and mitzvahs. They are only waiting for someone to press the right buttons.

From a letter from the first of Adar, 5732 (1972) (Igrot Kodesh vol. 27, p. 347.)