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Meaning of the Greek verb baptizein

The Greek-English Lexicon of Liddell and Scott gives the primary meaning of the verb baptízein, from which the English verb "baptize" is derived, as "dip, plunge", and gives examples of plunging a sword into a throat or an embryo and for drawing wine by dipping a cup in the bowl; for New Testament usage it gives two meanings: "baptize", with which it associates the Septuagint mention of Naaman dipping himself in the Jordan River, and "perform ablutions", as in Luke 11:38.

Although the Greek verb baptízein does not exclusively mean dip, plunge or immerse (it is used with literal and figurative meanings such as "sink", "disable", "overwhelm", "go under", "overborne", "draw from a bowl"), lexical sources typically cite this as a meaning of the word in both the Septuagint and the New Testament.

"While it is true that the basic root meaning of the Greek words for baptize and baptism is immerse/immersion, it is not true that the words can simply be reduced to this meaning, as can be seen from Mark 10:38–39, Luke 12:50, Matthew 3:11 Luke 3:16 and Corinthians10:2."

Two passages in the Gospels indicate that the verb baptízein did not always indicate submersion. The first is Luke 11:38, which tells how a Pharisee, at whose house Jesus ate, "was astonished to see that he did not first wash (ἐβαπτίσθη, aorist passive of βαπτίζω —literally, "was baptized") before dinner". This is the passage that Liddell and Scott cites as an instance of the use of βαπτίζω to mean perform ablutions. Jesus' omission of this action is similar to that of his disciples: "Then came to Jesus scribes and Pharisees, which were of Jerusalem, saying, Why do thy disciples transgress the tradition of the elders? for they wash (νίπτω) not their hands when they eat bread". The other Gospel passage pointed to is: "The Pharisees...do not eat unless they wash (νίπτω, the ordinary word for washing) their hands thoroughly, observing the tradition of the elders; and when they come from the market place, they do not eat unless they wash themselves (literally, "baptize themselves"— βαπτίσωνται, passive or middle voice of βαπτίζω)".

Scholars of various denominations claim that these two passages show that invited guests, or people returning from market, would not be expected to immerse themselves ("baptize themselves") totally in water but only to practise the partial immersion of dipping their hands in water or to pour water over them, as is the only form admitted by present Jewish custom. In the second of the two passages, it is actually the hands that are specifically identified as "washed", not the entire person, for whom the verb used is baptízomai, literally "be baptized", "be immersed", a fact obscured by English versions that use "wash" as a translation of both verbs. Zodhiates concludes that the washing of the hands was done by immersing them. The Liddell–Scott–Jones Greek-English Lexicon (1996) cites the other passage (Luke 11:38) as an instance of the use of the verb baptízein to mean "perform ablutions", not "submerge". References to the cleaning of vessels which use βαπτίζω also refer to immersion.

As already mentioned, the lexicographical work of Zodhiates says that, in the second of these two cases, the verb baptízein indicates that, after coming from the market, the Pharisees washed their hands by immersing them in collected water. Balz & Schneider understand the meaning of βαπτίζω, used in place of ῥαντίσωνται (sprinkle), to be the same as βάπτω, to dip or immerse, a verb used of the partial dipping of a morsel held in the hand into wine or of a finger into spilled blood.

A possible additional use of the verb baptízein to relate to ritual washing is suggested by Peter Leithart (2007) who suggests that Paul's phrase "Else what shall they do who are baptized for the dead ?" relates to Jewish ritual washing. In Jewish Greek the verb baptízein "baptized" has a wider reference than just "baptism" and in Jewish context primarily applies to the masculine noun baptismós "ritual washing"

The verb baptízein occurs four times in the Septuagint in the context of ritual washing, baptismós; Judith cleansing herself from menstrual impurity, Naaman washing seven times to be cleansed from leprosy, etc.

Additionally, in the New Testament only, the verb baptízein can also relate to the neuter noun báptisma "baptism" which is a neologism unknown in the Septuagint and other pre-Christian Jewish texts.

This broadness in the meaning of baptízein is reflected in English Bibles rendering "wash", where Jewish ritual washing is meant: for example Mark 7:4 states that the Pharisees "except they wash (Greek "baptize"), they do not eat", and "baptize" where báptisma, the new Christian rite, is intended.