The answer is: False

Gen 16:15 - His first son was Ishmael who was born before Isaac

It's fascinating to look deeper into the story of Abraham and his children. While Isaac is the more prominently featured son, Abraham’s firstborn can be traced back to a eureka moment that stemmed from impatience combined with a cultural norm of the times. Abraham fathered Ishmael through Hagar, Sarah's maidservant. This moment captures a deep sense of human frailty, where our leaps of faith can also lead us down complicated paths of consequence.

Ishmael’s journey holds significant weight in the narrative not only as Abraham's firstborn but as a pivotal character in his own right. Often viewed through the lens of Islamic tradition, he is considered a prophet and an ancestor of the Arab peoples, emphasizing the interconnectedness of Abraham’s family line across cultures.

Moreover, Isaac and Ishmael's eventual meeting recounted later in the Bible also gives a foreshadowing of complex family dynamics that resonate through the millennia. The fact that Isaac means “laughter” ties beautifully to Sarai's initial disbelief set against the backdrop of divine promise, showcasing an astonishing arc from doubt to joy.

This tale resonates with many themes, from faith and trust difficulties to the rich tapestry of family relations. Abraham’s story encourages us to examine the tapestry of our own lives and the intricate threads that influence both personal and expansive narratives across history.