How the entire material world becomes spiritualized

Both the material world and spiritual world are considered to be the body of the Supreme Lord. We can understand that the material body is caused by the spiritual body and is therefore an expansion of the spiritual body. Thus when one takes up spiritual activities, one’s entire material body is spiritualized. Similarly, in this material world, when the Krishna consciousness movement expands, the entire material world becomes spiritualized. As long as we do not realize this, we live in the material world, but when we are fully Krishna conscious we live not in the material world but in the spiritual world.

Srimad Bhagavatam 7.9.33 purport