Ibrahim is the imam of those who turn away from shirk. He debated his people about the stars then the idols, and was thrown into the fire which became cool and peace. He migrated, and was given Ismail through Hajar and Ishaq through Sarah in old age.
He was commanded in a dream to sacrifice his son. He submitted, and a great sacrifice ransomed him. That is the story of udhiyah.
With Ismail he raised the foundations of the House and called people to Hajj. His way is the one the Prophet ﷺ was told to follow.