The answer is: 86 years

Abram (who was later named Abraham) had his first son, Ishmael at the age of 86. Gen 16:16

Did you know that Abram, later known as Abraham, experienced quite the journey before becoming a father? This significant moment at age 86 marks a pivotal point not just in Abram's life but also in biblical history. He was already quite advanced in years, which makes the birth of Ishmael very interesting—especially considering the norms of family and fatherhood in his time!

Abram's story showcases an incredible amount of faith and a touch of theatrics too. Ishmael's mother, Hagar, was actually Sarai (whom God later renamed Sarah)'s Egyptian servant. Faced with the frustration of childlessness at a time when progeny was everything, Sarai suggested this unusual arrangement. This scenario highlights human inclination to engineer solutions in times of despair—a theme that resonates throughout Scripture.

Later on, God would promise Abram that he would have a son through Sarah, which would come at a surprisingly advanced age for both. This lengthy wait made Isaac’s birth even more miraculous, illustrating a divine intervention theme often echoed throughout biblical stories. Also, if you look deeper, the name "Ishmael" means "God hears," which remains significant considering God's eventual response to Abram's obedience and faith.

So, while 86 seems extraordinarily late today, it invites reflection on the patience and hope woven throughout humanity's narrative with the divine. That extended waiting couldn't just be about biology—it reflects the deep and often convoluted journey of faith many of us can relate to.