Short answer: Matthew 28:20 closes the Great Commission: "Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world" (KJV). Jesus defines discipleship as teaching obedience, not merely transferring information — and then attaches a promise of his own unbroken presence to the task he has just assigned.
The context: the last words of Matthew's Gospel
These are the final two verses of Matthew. The risen Jesus meets the eleven disciples on a mountain in Galilee, where Matthew notes candidly that "some doubted" (28:17, KJV). He declares that all authority in heaven and earth has been given to him (v. 18), then commissions them to make disciples of all nations, baptizing them in the name of the Father, Son, and Holy Spirit (v. 19).
Verse 20 completes the sentence with two clauses: what to teach, and who will be present while they do it.
The bookend is deliberate. Matthew's Gospel opened by naming Jesus "Emmanuel, which being interpreted is, God with us" (1:23, KJV). It closes with the same promise in Jesus' own voice. Everything between those two points is framed by presence.
What it means, phrase by phrase
"Teaching them to observe all things whatsoever I have commanded you." The object of teaching is observance — doing. Matthew has already warned that hearing without doing builds a house on sand (7:24–27). Discipleship in this verse is not a curriculum completed but a life brought into obedience.
Note "all things," not a selection. And note the source: what Jesus commanded. The commission does not authorize teachers to invent content.
"And, lo, I am with you alway." The word rendered "lo" signals emphasis — look, pay attention. The promise is present tense: I am. Not "I will send help" but "I am with you." This is remarkable coming immediately after he has been described as having all authority; the one who holds cosmic authority binds himself to ordinary disciples doing ordinary work.
"Even unto the end of the world." More literally, to the completion of the age. The promise runs the full length of the assignment. Since the mission extends to all nations and to the end of the age, so does the presence.
Where faithful Christians differ: who the commission primarily addresses. Some understand it as given to the eleven as apostles, with the church continuing their work derivatively; others read it as directly binding every believer. Christians also differ on how "baptizing" in verse 19 relates to verse 20's teaching — whether instruction precedes baptism or follows it — a difference that tracks longstanding disagreements about believer's baptism and infant baptism.
Cross-references
- Matthew 1:23 — "God with us," the promise that opens the Gospel.
- Matthew 18:20 — where two or three gather in his name, he is in the midst.
- Acts 1:8 — you shall receive power and be witnesses to the ends of the earth.
- Hebrews 13:5 — "I will never leave thee, nor forsake thee" (KJV).
- John 14:16–18 — the promise of the Comforter; "I will not leave you comfortless."
- Isaiah 41:10 — fear not, for I am with thee.
- Matthew 7:24–27 — hearing and doing.
How to apply it today
Read the two halves together. The presence is promised inside the commission, not apart from it. Many Christians quote "I am with you always" as general comfort — which is not wrong, since God's faithfulness is real in every circumstance — but the immediate promise is to people who are going, baptizing, and teaching.
Practically, ask what "teaching them to observe" would change about how you disciple someone. Information transfer is easy to measure and easy to fake. Obedience takes relationship, patience, and time.
Ask also whether the "all things" is intact in what you pass on. It is natural to teach the commands that come easily and skip the ones that cost.
And when the work feels disproportionate to your capacity, notice what Jesus offered as the answer. He did not reduce the assignment. He gave his presence.
Frequently Asked Questions
Is the Great Commission for all Christians or only for pastors and missionaries? Christians differ. Some hold that it was given specifically to the eleven apostles and is carried on by the church as an institution. Others read it as addressed to every disciple, since the command is to make disciples who themselves observe all Jesus commanded. In practice most traditions affirm that all believers share in the mission, even while roles differ.
What does "even unto the end of the world" mean? The phrase refers to the completion of the present age rather than the destruction of the planet. Jesus is saying his presence will last as long as the mission does — through the entire stretch of history before his return. It is a promise of duration, not a prediction of a date.
How is Jesus "with" us if he ascended? The New Testament answers this mainly through the Holy Spirit, whom Jesus promised in John 14:16–18 as the one who would come so that his followers would not be left comfortless. Traditions describe the mode of this presence differently, but they agree the promise is real and personal, not merely a memory of him.
Does Matthew 28:20 require baptism before teaching? The Greek participles in verses 19–20 describe how disciples are made — by baptizing and by teaching — without fixing a strict order. This is one reason traditions that practice believer's baptism and those that practice infant baptism can both appeal to the passage.