The answer is: 86 years

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

At 86 years old, Abram became a father to Ishmael, marking a pivotal moment in his life and in the biblical narrative that follows. You might find it fascinating that the name "Ishmael" means "God will hear." This reflects the theme of communication with God—an essential element of Abram's story. God spoke to Abram numerous times, reaffirming His promises despite the perplexities of Abram’s long wait for a child.

Interestingly, Abram's journey of fatherhood didn’t really align with the societal norms of his time. At the age when many people may consider retirement, Abram was just beginning to carve out his legacy. The story of Ishmael shows how Abram took matters into his own hands, and this divine unfolding leads us to contemplate the tension between human decisions and divine plans—something people grapple with in various forms today.

Did you know that Ishmael is recognized in Islamic tradition as a prophet and an ancestor of Muhammad? The biblical account thus embeds itself within a broader cultural narrative, showcasing how interlinked our history and stories can be.

Abram’s journey teaches patience and faith, themes often echoed throughout the scriptures. Despite the doubts he faced about fatherhood and legacy, it’s his commitment to the divine that prompts transformative journeys—not just for him, but for those around him. Abram’s tale really pushes us to think about parental roles and the nature of trusting in a larger plan.