The King James Version (KJV) of the New Testament was completed in 1611 by 8 members of the Church of England.
There were (and still are) no original texts to translate. The oldest manuscripts we have were written down hundreds of years after the last Apostle died. There are over 8000 of these old manuscripts, with no two alike.
The King James translators chose to use none of the texts. Instead, they edited previous translations to create the New Testament their king and parliament would approve.
So today, 21st century Christians believe the 'Word of God' is a book edited in the 17th century from 16th century translations of 8000 contradictory copies of 4th century scrolls that claim to copies of lost letters written in the 1st century by unknown authors.
Many Christians believe that Jesus abolished the Old Testament dietary laws. The dietary interpretation of Jesus' words (i.e. swine pig consumption) does not exist in the Textus Receptus Bible, the authoritative Greek New Testament text that was accepted by the Christian Church until about 100 years ago.
This parenthetic interpretation of Jesus words was obviously a comment that some Bible scribe wrote in the margin of the text. Later scribes accidentally or deliberately incorporated the marginal comment into the text itself, so the statement appears only in corrupted texts.
But the statement does not appear in the Textus Receptus, so the KJV says nothing about Jesus 'declaring all foods clean.'
God had clearly prohibited pig, swine and pork in the Old Testament. This verse was over whether or not 'unwashed hands' caused clean food to become unclean.
'Thus he declared all foods clean' is completely missing from the Textus Receptus, the authoritative Greek New Testament line used for centuries. It claims this widespread dietary interpretation was likely a later scribal note added to the margins of the text, which was subsequently mistaken for Jesus' actual words in corrupted versions.
Today, the King James Version Bible (KJV) is considered the crown of English Bibles. In the 17th century, the Textus Receptus, the authoritative Greek New Testament text was used to translate the Greek Bible into the English KJV Bible.