What Does the Bible Say About the Age of Mary, Joseph, Isaac, and Rebekah?

The Bible does not state the exact ages of Mary, Joseph, and Rebekah. However, Scripture provides enough information to distinguish between what is explicitly stated and what is merely historical conjecture.

When people ask how old Mary and Joseph were at the birth of Jesus, or how old Isaac and Rebekah were when they met, it is important to answer honestly: the Bible does not give complete information regarding all of these individuals. In some cases, we have only indirect clues, while in one instance, we have a clear, specific number. For a Christian, it is essential not to build doctrine on guesswork, but to hold fast to what is revealed in God’s Word.

What the Bible Says About Mary

Regarding Mary, Scripture tells us that she was a virgin betrothed to Joseph. This indicates her marital status, but does not state her age.

“Now in the sixth month the angel Gabriel was sent by God to a city of Galilee named Nazareth, to a virgin betrothed to a man whose name was Joseph, of the house of David. The virgin’s name was Mary.” Luke 1:26–27

From this passage, we can draw only a cautious conclusion: Mary was a young, unmarried woman who was already betrothed. In the Jewish society of that era, young women frequently married at an early age. For this reason, many commentators suggest that Mary might have been around 14–16 years old. Yet it must be emphasized: this is not a biblical fact, but a historical reconstruction.

Restraint is crucial for an Adventist approach. Where the Bible is silent, we should not speak with undue certainty. Ellen White describes Mary with great reverence as a humble, faithful woman chosen by God, but she also does not specify her age. Therefore, the proper answer is: the exact age of Mary is unknown.

What Can Be Said About Joseph

Scripture portrays Joseph as a righteous and responsible man. He already held the position of a betrothed husband, was capable of making weighty decisions, and cared for his family.

“Then Joseph her husband, being a just man, and not wanting to make her a public example, was minded to put her away secretly.” Matt 1:19

The Gospels also demonstrate that he worked, traveled, fulfilled civic duties, and protected Mary and the infant Jesus.

“So it was, that while they were there, the days were completed for her to be delivered.” Luke 2:6

“When he arose, he took the young Child and His mother by night and departed for Egypt.” Matt 2:14

Yet, no passage mentions precisely how old Joseph was. In later tradition, Joseph is sometimes depicted as significantly older than Mary, but that is not an assertion made by the Bible. The most cautious statement we can make is this: Joseph was an adult man, but his exact age is unknown.

Isaac: Here the Bible Gives an Exact Number

Unlike the story of Mary and Joseph, Scripture is entirely explicit regarding Isaac. When he took Rebekah as his wife, he was 40 years old.

“Isaac was forty years old when he took Rebekah as wife, the daughter of Bethuel the Syrian of Padan Aram, the sister of Laban the Syrian.” Gen 25:20

Therefore, if the question is how old Isaac was when he met Rebekah and took her as his wife, the answer is biblically certain: 40 years old.

This is a good example of how the Bible can at times be very specific. Thus, not all biblical figures are equally “uncertain” when it comes to their age. In some instances we have an established fact, while in others we have only general impressions.

Rebekah: What Is Known and What Is Not

Concerning Rebekah, the Bible does not provide an exact age. However, she is described as a maiden of marriageable age, physically active, and capable of independent action and decision-making.

“And the young woman was very beautiful to behold, a virgin; no man had known her. And she went down to the well, filled her pitcher, and came up.” Gen 24:16

“Then they called Rebekah and said to her, ‘Will you go with this man?’ And she said, ‘I will go.’” Gen 24:58

These texts demonstrate her maturity within the context of ancient culture, but they do not allow us to assign a specific number of years. Various Jewish traditions and attempts to calculate her age through genealogies exist, yet such calculations are far from indisputable. Therefore, the safest conclusion is: Rebekah was a young woman of marriageable age, but her exact age is not stated in the Bible.

Why It Is Important to Distinguish Fact From Assumption

Biblical research demands honesty. Some things have been revealed plainly, while other details God did not see fit to disclose. Deuteronomy reminds us of this principle:

“The secret things belong to the Lord our God, but those things which are revealed belong to us and to our children forever, that we may do all the words of this law.” Deut 29:29

This applies directly to the ages of biblical figures. We do not need to fill in the blanks with our imagination. It is enough to state:

Mary: exact age is unknown;
Joseph: exact age is unknown;
Isaac: 40 years old at marriage to Rebekah;
Rebekah: exact age is unknown.

This approach helps preserve reverence for Holy Scripture. Seventh-day Adventists uphold the principle of “Thus says the Lord,” rather than “So it seems according to tradition.” Where there is a clear text, we speak with confidence. Where there is no clear text, we speak with caution.

Ultimately, it is worth remembering: the primary purpose of biblical narratives is not to satisfy every historical curiosity, but to lead us to faith, obedience, and trust in God. The practical application is simple: as we read the Bible, let us learn to distinguish God’s revelation from human conjecture, and build our convictions solely upon what is truly written in the Word of God.