Why do the genealogies of Christ differ between Matthew and Luke?

The writers of Matthew and Luke were communicating to two different groups of readers, so they approach Jesus’ genealogy from different angles. Matthew writes to a Jewish audience and establishes Jesus as the Messiah via His lineage through the promised seed of Abraham and King David, perhaps the two most prominent ancestors in Israel’s history. Matthew provides this evidence to help convince people that Christ is the Anointed One from God, prophesied in Scripture. He follows the line of Joseph, Jesus’ earthly father.

Luke, a physician, writes mostly to the Gentiles and follows Jesus’ lineage all the way back to Adam, who was a “son of God.” In other words, Christ is connected not just to the Jewish people, but to the entire human race. Because Mary’s conception was through the Holy Spirit, there was some question whether God placed any essence of Joseph’s DNA into Jesus. Both Matthew and Luke are careful not to firmly link Jesus as the actual son of Joseph; Luke uses the phrase “as was supposed.” It is believed that Luke’s lineage follows Mary’s father or Joseph’s father-in-law.

Ancient genealogists did not trace nor categorize lineages in the same way we do. Often, a grandfather would still be referred to as a father to a grandson. A son could be any male descendent. Not every generation was always listed. Matthew’s cluster of “fourteen” generations is used to help establish Jesus with David. In Hebrew, the numerical value of David’s name is 14.

Finally, let’s remember that the apostle Paul warns us about getting too caught up in studying genealogies, saying not to “give heed to fables and endless genealogies, which cause disputes rather than godly edification” (1 Timothy 1:4). I’m glad that my salvation is based on my spiritual adoption. Paul writes, “Therefore know that only those who are of faith are sons of Abraham” (Galatians 3:7).

Key Bible Texts

And Jesus himself began to be about thirty years of age, being (as was supposed) the son of Joseph, which was the son of Heli, (Luke 3:23 KJV)