Sutra 46
Asana is perfect firmness of body, steadiness of intelligence and benevolence of spirit.
This sutra is teaching about asana as a practice to cultivate a strong, clean body, steady mind for focus and spiritual study, and a kind spirit. I found nothing for or against asana practice in the Bible.
Iyengar says “the definition of asana is whatever asana is performed; it should be done with a feeling of firmness, steadiness, and endurance in the body, goodwill in the intelligence of the head and awareness and delight in the intelligence of the heart. This is how asana should be understood, practiced and experienced.”