A conjectural emendation is the guesswork and/or opinion of the reviser(s). They should NOT be in the Textus Receptus(Hereafter referred to as the "TR" in this thread),
The TR is a Greek-language New Testament copy compiled from a number of ancient Greek Scriptural manuscripts and parts of ms. of the Byzantine manuscript group. Theodore Beza's 1598 revision was the basis for the AV 1611's New Testament. The TR is an earnest attempt to present God's word in Greek as accurately as possible, and thus should stick only to the material which is found in the mss. it was made from. Thus, any conjectural emendations found in it are NOT SCRIPTURE, but are the additions of maker(s) of that particular TR edition in which they're found.
Thus, Beza's conjectural emendation of "and shalt be" in Rev. 16:5 is NOT SCRIPTURE, but is a wording created by BEZA. While DOCTRINALLY correct, it's NOT found in any of the mss. used by Beza to make his revision. (which is actually a revision of Stephanus' earlier revision) Thus, it's NOT SCRIPTURE!
The AV makers simply followed the TR without verifying it, most-likely because they didn't have the time, nor access to the mss. that went into making the TR, even though they did use around 20 ancient Greek mss. at least some. Thus, Beza's guesswork/opinion ended up in the KJV's text! While this was unintentional on the part of the AV makers, it's still a GOOF in the KJV.
The TR is a Greek-language New Testament copy compiled from a number of ancient Greek Scriptural manuscripts and parts of ms. of the Byzantine manuscript group. Theodore Beza's 1598 revision was the basis for the AV 1611's New Testament. The TR is an earnest attempt to present God's word in Greek as accurately as possible, and thus should stick only to the material which is found in the mss. it was made from. Thus, any conjectural emendations found in it are NOT SCRIPTURE, but are the additions of maker(s) of that particular TR edition in which they're found.
Thus, Beza's conjectural emendation of "and shalt be" in Rev. 16:5 is NOT SCRIPTURE, but is a wording created by BEZA. While DOCTRINALLY correct, it's NOT found in any of the mss. used by Beza to make his revision. (which is actually a revision of Stephanus' earlier revision) Thus, it's NOT SCRIPTURE!
The AV makers simply followed the TR without verifying it, most-likely because they didn't have the time, nor access to the mss. that went into making the TR, even though they did use around 20 ancient Greek mss. at least some. Thus, Beza's guesswork/opinion ended up in the KJV's text! While this was unintentional on the part of the AV makers, it's still a GOOF in the KJV.