Verse explainer
Jesus didn't come to erase the Old Testament — he came to be everything it was pointing toward.
Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
BSBDo not think that I have come to abolish the Law or the Prophets. I have not come to abolish them, but to fulfill them.
The plain meaning
Jesus is opening the Sermon on the Mount, and some in the crowd would have heard his teaching on the kingdom and feared — or hoped — he was sweeping away Moses and the prophets. He stops that thought before it starts. The word 'fulfil' (Greek plēroō) is doing the heavy lifting: it means to fill something up to completeness, not to cancel it. Matthew Henry captures the image well — if the law is a vessel with water already in it, Jesus didn't pour it out; he filled it to the brim. This plays out in at least three directions: Jesus obeyed the moral law perfectly (Gal. 4:4), he embodied every promise and type the prophets pointed toward, and in the verses that follow (vv. 21–48) he unfolds the law's deepest intent — going beyond surface compliance to the heart. The Old Testament is not overruled; it is completed in him.
The common misreading
What the commentators say
Henry distinguishes four senses of 'fulfil': obeying the law's commands perfectly, making good its promises, answering its types and shadows as their substance, and filling up its partial outlines to completeness. He stresses that the gospel is the amendment of the law, not its repeal — reformation, not abrogation (Heb. 9:10). Christ kept every iota and tittle in place while bringing them to their full meaning.
Gill draws the line carefully between the moral law, which Christ fulfilled by perfect obedience and by expounding its true sense, and the ceremonial law, which ceased naturally by being fulfilled in him. The prophets' explanations, promises, and predictions were not voided but fully accomplished. He notes that even the Talmud, despite a hostile framing, concedes Christ claimed not to diminish the law of Moses.
JFB read the phrase 'the law and the prophets' as a unified whole — the authority and principles of the entire Old Testament. They note Jesus was simultaneously reassuring those who revered Scripture, rebuking revolutionary spirits who hoped he'd overturn it, and warning hypocrites who used it as a shield. To fulfil means to unfold, embody in living form, and enshrine in the affection and character of people.
The word behind it
'To fill full, to complete, to bring to its intended fullness.' It is the opposite of 'destroy' (kataluō, to loosen or demolish). Used elsewhere for prophecy being 'fulfilled,' it carries the sense of bringing something to its designed completion. The choice of this word rules out the reading that Jesus simply kept the law as a law-abiding citizen — he is its telos, the goal it was always heading toward.
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