Luke 1:4

That thou mightest know the certainty of those things, wherein thou hast been instructed.

Luke 1:4 (KJV)

Context

Luke 1:4 concludes the opening prologue of Luke’s Gospel. The author explains that he has carefully investigated everything from the beginning and has written an orderly account. This verse states the purpose of that work: to give Theophilus, and all who read it, certainty about the things he has been taught.

Meaning

“That thou mightest know” reveals Luke’s goal: to provide knowledge and understanding, not merely information, but a settled confidence. The Greek word translated “certainty” (asphaleian) conveys firmness, stability, and security. Luke wants his readers to have a solid foundation for their faith, not a vague or uncertain belief.

“The certainty of those things” points to the events and teachings concerning Jesus Christ. Luke aims to give assurance and confidence regarding the truth of the Gospel. His account is not based on myths or uncertain traditions but on reliable testimony and careful investigation.

“Wherein thou hast been instructed” refers to the oral instruction Theophilus had already received. The Greek word katechethes means to be taught by word of mouth. Luke’s purpose is not to introduce new teaching but to confirm and establish the truth of what has already been taught. He writes so that believers may know the grounds of their faith and rest on a sure foundation.

Biblical connections

Luke’s method of careful investigation and orderly writing (Luke 1:1-3) shows that Christian faith is grounded in verifiable history. This emphasis on certainty and reliable testimony is consistent with the broader biblical witness that faith rests on God’s revelation, not on human speculation.

Application

This verse encourages believers to be confident in the truth of the Gospel because it is based on reliable testimony. It also calls us to value sound instruction and to confirm that instruction through diligent study of the Scriptures. The certainty available to Theophilus is available to all who read Luke’s Gospel. We can be grounded in the Word, so that our faith rests on the sure foundation of God’s revelation.

Reflection

Luke’s careful approach serves as a model for how we should approach the Scriptures—with diligence and a desire for accuracy. God has provided a trustworthy record of His redemptive work in Christ. We can therefore hold our faith with firm confidence, knowing that it is built on the truth of what God has done.