The largest ‘Pyramid’ in Egypt belongs to Khufu, an Egyptian Pharaoh. Studies have revealed it took around 6700 highly skilled men (let alone the slaves) and 20 years of labor to build. Why did Khufu put such a huge effort into building himself a tomb? The Egyptians believed in life after death so much they made preparations while they were still alive. You see, God had placed eternity in their hearts.