"eternal destiny" refers to what happens to a person after they die—whether they will spend eternity in heaven, hell, or some other state depending on their beliefs or the afterlife concept they follow. Full definition
Neither one nor the other determines eternal destiny, but rather how we interact with each other while on earth. (redeeminggod.com)
The truth of the concept of the prophetic stance is realized only to the extent that my life is shaped by my apprehension not merely of the concrete here and now but of the global situation and eternal destiny of the human race. (religion-online.org)