Revelation 14:9
KJV
And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,
NIV
A third angel followed them and said in a loud voice: “If anyone worships the beast and its image and receives its mark on their forehead or on their hand,
Modern versions’ reading ‘on’ limits the specificity, making it seem as though the mark is merely a surface symbol. The KJV’s “in” might suggest an outward mark, but also includes the possibility of a bio-technological implant. See also: Rev 13:16, 15:2
Scripture taken from the Holy Bible, NEW INTERNATIONAL VERSION®, NIV® Copyright © 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. NEW INTERNATIONAL VERSION® and NIV® are registered trademarks of Biblica, Inc. Use of either trademark for the offering of goods or services requires the prior written consent of Biblica US, Inc.