The Flood: A Picture of Limited Atonement

Was the Ark designed and built to save all people on the planet, but only eight got on it? Or was it designed and built only to save eight people, and thats why only eight people got on it? It's the latter. The flood waters were meant to destroy all who were not on the ark, not all who did not accept the ark as a means of salvation. God intended to only save Noah's family, so the very vessel of salvation/preservation was built to only house eight humans. So much so, that God only allowed eight to get on the ark.