Lord Krishna said: O son of Kunti, neither here on earth nor in the higher worlds, can there be destruction for him. One intending to do good (set on the auspicious path), will never meet an adverse plight. (Such is the spiritual law.)
Krishna, as ever, is adept in handling any situation. Straightaway he says that no destruction will befall such a yoga practitioner either in his life here or in the world awaiting him after his body falls.
All adversities are an outcome of the harmful deeds one does. In pursuing the samatva-yoga Krishna prescribes, the practitioner is not guilty of inflicting any harm or hindrance to anyone. So there will be no adversity for him anywhere.
In fact, one who intends to do good, will never have an adverse plight. What a great assurance, how relieving and rewarding for one and all! Gita becomes adorable because of such inspiring and empowering revelations!