Defrost the spinach and squeeze the excess water out. Keep it in a paper towel so that all the extra moisture is removed. You need the spinach completely dry so that the dip is smooth and creamy; or else it will become watery once you prepared. In a bowl, mix chopped spinach, sour cream, mayonnaise, garlic chives, parsley, salt, black pepper, onion powder, and paprika properly. Taste the dip once before serving it with crackers and warm rye bread.