Yosef expresses his feelings about going down to Mitzrayim in two ways and by naming his two sons, Menashe, and Ephraim . The oldest son, represents his feeling of not wanting ever to forget his father’s home where he comes from, and not to get affected by the society around him. Ephraim represents a gratitude and thankfulness of his multiplying and growing, despite his difficulties, therefore, Menasha was the oldest, because that is the first feeling you have to have however, Yakov mainly blesses Ephraim, because that is the ultimate purpose in this world is to grow despite the difficulties. לקו״ש טו