Jesus used the attribute "these little ones" for his followers. We see a mention of the term first in 2 Chronicles 31:18, which says:
They included all the little ones, the wives, and the sons and daughters of the whole community listed in these genealogical records. For they were faithful in consecrating themselves.
Coming to NT, we read, for example, in Matthew 10:42, which says:
And if anyone gives even a cup of cold water to one of these little ones who is my disciple, truly I tell you, that person will certainly not lose their reward.”
My question is: was the term "these little ones" used as a code word for believers?