Baptizo means to submerge something completely, letting it take on the state of whatever it's plunged into.
In everyday Greek, baptizo was a plain verb for dipping or sinking. A dyer baptized cloth in vinegar and it came out a different colour. A ship that took on too much water was said to be baptized — it went under. The word doesn't specify a ritual; it specifies an action, and a result: something goes in, and comes out changed, covered, or gone.
That range is why the word travels so easily into religious use. Jewish washing customs used it for the immersion of vessels and, sometimes, hands. John's rite in the Jordan used it for people going under water as a sign of repentance. Paul later uses it to describe being joined to Christ's death, as if a person were plunged into it and came up different. The core idea holds across all of these: total immersion, with a change on the other side.
And on returning from the market, they do not eat unless they wash. And there are many other traditions for them to observe, including the washing of cups, pitchers, kettles, and couches for dining.
Used for the ordinary Jewish practice of dipping cups and vessels before eating.
But I have a baptism to undergo, and how distressed I am until it is accomplished!
Jesus uses the word metaphorically for the suffering that will overwhelm him.
Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit.
Peter's call to be baptized as the standard early Christian response to repentance.
Or aren’t you aware that all of us who were baptized into Christ Jesus were baptized into His death? We were therefore buried with Him through baptism into death, in order that, just as Christ was raised from the dead through the glory of the Father, we too may walk in newness of life.
Paul uses baptism as a picture of being plunged into Christ's death and raised with him.
Most English Bibles don't translate baptizo at all — they transliterate it as 'baptize', which sounds like a technical churchy term but was, in Greek, an ordinary verb. Some translations render it 'wash' when the context is ritual cleaning rather than the Christian rite, and 'dip' or 'immerse' when translators want to press the mode of the action. Transliterating dodges the centuries-old sprinkling-versus-immersion argument, but it also hides that first readers heard a common word, not a special one.
The word is sometimes stretched into a proof-text for one denomination's mode of baptism, as if 'baptizo means full immersion' settles every church practice by lexical fiat. It's the reverse problem too: because English just says 'baptize', readers forget the word originally meant plunging something under until it was covered. It was a working verb long before it was a sacrament.
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