'Add' in the Bible

And who of you by worrying can add one hour to [the length of] his life?

And which of you by worrying can add one hour to his life’s span?

This greeting is in my own hand—Paul.

But from those who were of high reputation (whatever they were—in terms of individual importance—makes no difference to me; God shows no partiality—He is not impressed with the positions that people hold nor does He recognize distinctions such as fame or power)—well, those who were of reputation contributed nothing to me [that is, they had nothing to add to my gospel message nor did they impose any new requirements on me].

I, Paul, write this greeting with my own hand. Remember my chains. May grace (God’s unmerited favor and blessing) be with you.

Demetrius has received a good testimony and commendation from everyone—and from the truth [the standard of God’s word] itself; and we add our testimony and speak well of him, and you know that our testimony is true.

I testify and warn everyone who hears the words of the prophecy of this book [its predictions, consolations, and admonitions]: if anyone adds [anything] to them, God will add to him the plagues (afflictions, calamities) which are written in this book;