Every time I see a Bible verse with a few words that are slightly different or even out of the ordinary, the first thought that comes to mind is the version of the Bible the verse was quoted from; whether it was from King James Version (KJV), New King James Version (NKJV), New International Version (NIV), etc.
For example, we have John 3:16:
King James Version:
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. (KJV)
New King James Version:
For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. (NKJV)
New International Version:
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. (NIV)
Only a few words change such as "only Son" vs "only begotten Son" and "believeth" vs "believe".
This is a simple suggestion to make it is easier to know which version of the Bible they are quoting from right away without looking it up.