The letter to Timothy warns that in the last days people will commit themselves to demonic spirits and doctrines of demons. What examples of these doctrines are you seeing?
Part of yoga teaches that a person's core strength is more than muscles in the belly built up from exercise. It is the inner person that draws on internal strength that is truly centered. When something is truly strong at its core, it is unshakable.
There is some truth in that saying, but their source is off. Depending on one's self to remain unshakable is like depending on the ocean to remain calm forever (Genesis 3;5-6; James 1:2-6; Isaiah 57:20-21). Our stability comes from depending on God (Psalm 1; Hebrews 12:25-29).
