Thank you for your kind words. Glory to God.Hello cocoa;
Yes, some verses are omitted for reasons of textual criticism and others omitted or added later by copyists. If you have a "study Bible" for the NKJV it should explain omissions or adds in the footnotes.
What I find encouraging is your bringing up your children to follow along with reading to them.
As early as God's command in Deuteronomy 6:1-2, “Now this is the commandment, and these are the statutes and judgments which the Lord your God has commanded to teach you, that you may observe them in the land which you are crossing over to possess, 2 that you may fear the Lord your God, to keep all His statutes and His commandments which I command you, you and your son and your grandson, all the days of your life, and that your days may be prolonged. - NKJV
God bless you, cocoa.
Bob
I read from an Orthodox study Bible, it's half St. Athanasius septuagint (OT) and NKJV (NT).
And when I read and do lesson with my children, I read from a standard NKJV.