In my former book

The only writer in Scripture who produced two volumes opens the second by referring to the first.

In my first book, O Theophilus. Same recipient, same author, a stated relationship between the two.

And two words describe the contents: all that Jesus began to do and to teach.

Do, and teach, in that order. Luke summarizes his own Gospel as a record of acts and words together, and Acts will do the same for the apostles — healings and sermons, works and explanations, in alternation, chapter after chapter.

But the word carrying the most weight is began.

It has been read two ways. Some take it as a Greek idiom that means little more than did. Others take it at full strength: the Gospel is what Jesus began to do and teach, and Acts is the continuation — what He went on doing, through the Spirit, in His people.

The second reading fits how Acts behaves. Peter says at Pentecost that Jesus, exalted at God’s right hand, has poured out what they see and hear. Paul is asked on the road why are you persecuting Me? when he had been persecuting the church. The book is full of Christ acting.

And notice how Luke handles the join. He does not repeat himself. He gives a compressed recap of the resurrection appearances, the instruction to wait, and the ascension — then moves on.

This is the same man who told us in his first preface exactly what he was doing: he had investigated everything carefully from the beginning, drawing on eyewitnesses and servants of the word, and wrote an orderly account so that Theophilus might know the certainty of what he had been taught.

That preface, from Week Two, governs both books.

And there is one more thing this slot can now say, having gathered testimony for fifteen weeks. The writers of Scripture are consistently more forthcoming about their methods than we expect them to be.

Moses says he wrote and where he put it. Jeremiah names his secretary. The chronicler names his archives. The Proverbs collectors date their committee. The psalmists head their songs with the occasion. Paul signs his letters against forgers. John says he selected. Peter says he was there. Luke says he investigated, and then tells you which volume you are holding.

And note what Luke does not claim. He does not say he was an eyewitness; he says he had access to them. He does not claim a vision or a dictation. He describes research and arrangement, and then hands over the result as the ground of certainty. That is an unusual kind of confidence, and it is checkable.

None of them behaves like a man producing something he expects to be taken on trust alone.

Luke and Acts together make up roughly a quarter of the New Testament by volume — more than Paul’s undisputed letters combined. The two are widely treated as a single work in two parts, and the shared dedication to Theophilus is the primary internal evidence.

Who Theophilus was is unknown. The name means friend or lover of God, and the address most excellent in Luke 1:3 is a formal one used elsewhere in Acts for Roman officials. Suggestions range from a patron who funded the work to a legal official; the honest answer is that we do not know.

Acts ends without resolving Paul’s trial — two whole years in his own rented house, preaching unhindered. The ending has been read as evidence of an early date, as a deliberate literary choice, or as a lost third volume. It is one of the genuine open questions in New Testament study.

The alternation of act and word in Acts is structural: a miracle or event, then a speech explaining it from Scripture. Pentecost and Peter’s sermon; the lame man healed and the sermon in Solomon’s Colonnade; the Gentiles receiving the Spirit and Peter’s report to Jerusalem. Luke wrote both volumes on the same principle he stated in one clause.

The we passages in Acts — sections in chapters 16, 20, 21 and 27 where the narration shifts to first person plural — are the internal evidence that the writer traveled with Paul for stretches of the journey. The shifts are abrupt and unexplained, which is one of the arguments for their being genuine travel notes.

Look it upG3056 λόγος logos, account, word · G4160 ποιέω poieo, to do, make · G1321 διδάσκω didasko, to teach · G756 ἄρχομαι archomai, to begin

Where this touchesActs 1:1–11 · Luke 1:1–4 (Week Two, Day Four) · Luke 24:44–53 · Acts 9:4 · Acts 28:30–31. Jeremiah, Luke, John, Revelation, Peter, Moses, Paul, the prophets, the Proverbs collectors, Peter on Paul, the chronicler, the Song of Moses, the Jerusalem council and the psalm headings gave the earlier accounts.