who is Joseph in Exodus 13:19?

In his old age, Jacob’s son Joseph performed a simple act of faith that had a profound effect on millions of true worshippers who lived after him. He was 110 when “he gave a command concerning his bones,” namely, that when the Israelites finally left Egypt, they were to take his bones with them. (Hebrews 11:22; Genesis 50:25) That command served as an added ray of hope for Israel during the many years of hard slavery that followed Joseph’s death, providing assurance that their deliverance would come.

11 Among those nourished by Joseph’s expression of faith was Moses. When Moses was 80, he was privileged to carry Joseph’s bones up out of the land of Egypt. (Exodus 13:19)

Joseph, the one with the coat of many colors.

Younger son of Jacob. He was known to his older brothers as their father’s favorite. For this reason his 10 older brothers conspired against the boy and sold him to slave traders, while telling their father the boy had been mauled by an animal. Joseph had been given dreams of God’s plan for his life; so with confidence and strength, he endured in this amazing story in Genesis.

The slave traders took him into Egypt and sold him to Potiphar, one of the Pharaoh’s officers. Joseph served his master well and gained great favor. But the master’s wife tried to seduce Joseph, a young man of impeccable integrity. After he rejected her, she went to her husband with false accusations. It resulted in Joseph’s imprisonment. Once again, God proved his presence and protection for Joseph. The prison keeper befriended him and learned of Joseph’s divine ability to interpret dreams.

Because of earning this reputation, Joseph was called upon to interpret a dream that deeply troubled the Pharaoh. None of the Pharaoh’s wise consults had been able to decipher the dream. But Joseph accurately relayed the symbols in the dream to a future time of abundance that would be followed by a time of great famine. The Pharaoh rewarded Joseph with overseeing the lands of Egypt. In these prosperous times he stored up the abundant harvest toward the tragic times ahead. During the years of famine, Joseph’s brothers came in search of grains and foods to keep their people from starvation. Not recognizing their young Hebrew brother as this matured and prominent Egyptian, he ordered them to return with their younger brother. When the brothers returned with Benjamin, Joseph revealed his identity. The brother’s suffered from great remorse of their actions and Joseph forgave them. It was a joyous reunion between a grieved father and lost son. Joseph’s years of steadfast reliance on God brought about not only reunion but his high position so that he was able to save a nation from starvation.

He's mentioned all throughout the end of Genesis.

Perhaps you should be a better reader.

First mention in Genesis 30

Son of Rachael. He was actually created by God, just as Isaac was.

You know, the guy with the striped coat.