Why Luke Wrote His Gospel

Every book begins somewhere. Some begin with an exciting story, others with a dramatic event, and still others with a personal introduction. The four Gospels each have their own distinctive beginning. Matthew opens with a genealogy, demonstrating that Jesus is the promised Son of David and heir to God's covenant promises. Mark begins abruptly with the announcement of John the Baptist and the public appearance of Christ. John reaches back even further, opening with one of the most majestic theological prologues ever written: "In the beginning was the Word."

Luke, however, begins differently.

Before he tells us anything about the birth of John the Baptist or the virgin conception of Christ, Luke tells us why he is writing. He pulls back the curtain and allows us to see his purpose. Rather than beginning with events, he begins with an explanation. Luke wants his readers to understand not only what happened, but why they can trust everything they are about to read.

This explanation is the opening sentence (Luke 1:1–4) and it is remarkable. Scholars have long noted that it is perhaps the finest piece of Greek prose in the New Testament. Consisting of over forty carefully crafted words, it is elegant, balanced, and weighty. Ned B. Stonehouse described it as a sentence "weighty in its declarations and implications" that "demands painstaking examination." Every Spirit inspired phrase contributes to Luke's project.

The Project

Luke explains to his reader his intent to write "an orderly account" concerning "the things that have been accomplished among us." That phrase deserves careful attention. The events surrounding the life and death of Jesus Christ are not merely stories that happened long ago. Luke uses the perfect tense in Greek to indicate that Christ's life, death, resurrection, and ascension are historical events that have been accomplished once for all, yet their effects continue into the present. Redemption has been achieved, and its blessings continue to unfold throughout history.

To accomplish this goal, Luke undertakes a careful literary project. First, he acknowledges that he is not the first to write about Jesus. "Many have undertaken to compile a narrative." Numerous written accounts were already circulating among the churches. This is significant. Luke does not portray himself as an isolated genius discovering new information. Rather, he stands within the community of faithful witnesses who sought to preserve the memory of Christ's ministry.

Second, Luke tells us where these earlier accounts originated. They came from "those who from the beginning were eyewitnesses and ministers of the word." Eyewitness occupied a unique place in redemptive history. Acts 1 describes the qualifications for replacing Judas among the apostles. The replacement had to be someone who had accompanied Jesus from the days of John's baptism until His ascension, that is, an eyewitness. The apostles were not secondhand reporters. They saw Christ with their own eyes. They heard His teaching firsthand. They witnessed His miracles, His death, and His resurrection. These eyewitnesses became ministers of the Word. They faithfully proclaimed what they had seen.

But eyewitnesses do not live forever. As the first generation aged, preserving an accurate written record became increasingly important. This leads to Luke's third point. Unlike some previous accounts that may have focused on particular events or collections of sayings, Luke desired to produce an orderly narrative. His purpose was not merely to collect traditions but to arrange them carefully into a coherent account that displayed God's saving work in Christ from beginning to end. But what were his qualifications?

The Personal Qualifications

Luke's Gospel also reveals something about Luke himself. Although he was not an eyewitness from the beginning, he possessed remarkable qualifications for the task God had given him. Church tradition identifies Luke as a Gentile, probably from Antioch, and Paul's companion during much of his missionary ministry. Paul refers to him affectionately in Colossians 4:14 as "the beloved physician." The "we" sections of Acts demonstrate that Luke personally accompanied Paul during significant portions of his missionary journeys.

His medical training likely contributed to careful observation, precision, and orderly thinking evident throughout both Luke and Acts. Most importantly, Luke was an exceptionally careful researcher. He writes that he had "followed all things closely for some time past." The expression suggests tracing events carefully, almost as though following footprints. Luke investigated. He interviewed. He compared sources. He examined testimony. One beautiful example illustrates this. Throughout the infancy narratives Luke repeatedly records that Mary "treasured up all these things in her heart" (Luke 2:19, 51). How would Luke know what Mary silently treasured in her heart unless he had spoken with someone who knew? It is entirely reasonable to conclude that Luke gathered firsthand testimony from Mary herself or from those closest to her.

Luke demonstrates what faithful historical investigation looks like. Yet Luke also tells us something equally important. He says, "It seemed good to me also." That expression may sound almost casual in English, but it echoes language found elsewhere in Scripture. At the Jerusalem Council, the apostles declared, "It seemed good to the Holy Spirit and to us" (Acts 15:28). Luke's decision to write was both a genuine human decision and part of God's sovereign purpose.

The Holy Spirit did not bypass Luke's education, personality, research, or writing ability. Inspiration did not erase his humanity. Rather, God employed every aspect of Luke's gifts so that what Luke freely chose to write was exactly what God intended to reveal. The doctrine of inspiration shines beautifully in these opening verses. Scripture is fully God's Word while simultaneously bearing the marks of its human authors. What is more, Luke had an inspired purpose.

The Purpose

Everything Luke has said culminates in one glorious purpose. He writes to his recipient "that you may have certainty concerning the things you have been taught." The Greek word translated "taught" is the same word from which we derive our English word "catechize." Someone had orally instructed him in the Christian faith. He knew the basic message of Jesus Christ.

But Luke wants him to possess certainty. Christianity does not rest upon myths, legends, or religious speculation. It rests upon carefully preserved historical revelation. Luke presents a faith grounded in eyewitness testimony, thoroughly investigated, carefully organized, and ultimately inspired by God Himself.

Luke is essentially saying, "You have heard these things preached. Now here is the carefully researched, orderly, Spirit-inspired account that confirms everything you have been taught." This remains deeply relevant today. Many voices question the reliability of the Gospels. Skeptics often suggest that the story of Jesus evolved over generations through legend and exaggeration. Liberal scholars teach that the Jesus of history is not the same as the Jesus of Scripture. Luke's own introduction answers those objections before they are even raised. The Gospel rests upon eyewitness testimony, historical investigation, and divine inspiration.

Yet Luke's purpose extends even further. His Gospel is certainly biography, but it is unlike any ordinary biography. Most biographies tell the story of someone who lived and died. We read them to learn about the past. But Luke tells us about someone who died—and then rose again. By the end of the Gospel, Jesus is alive forevermore. He commissions His disciples as witnesses (Luke 24:48). He promises the coming of the Holy Spirit (Luke 24:49). He ascends into heaven while blessing His people. The disciples respond by returning to Jerusalem "with great joy" and continually praising God.

That is where Luke intends to lead every reader. His goal is worship. As we come to know Christ with increasing certainty, we should also grow in increasing praise. The more clearly we understand the historical reality of the gospel, the more deeply we should rejoice in the living Savior who reigns today. Luke invites us to examine carefully, to believe confidently, and to worship joyfully.