'Familiar' in the Bible
He said to them, “Therefore every scribe who has become a disciple of the kingdom of heaven is like the head of a household, who brings out of his treasure things that are new and fresh and things that are old and familiar.”
His neighbours, therefore, and the other people to whom he had been a familiar object because he was a beggar, began asking, "Is not this the man who used to sit and beg?"
since you are especially familiar with all the Jewish customs and controversies. I beg you, therefore, to listen patiently to me.
I am speaking in [familiar] human terms because of your natural limitations [your spiritual immaturity]. For just as you presented your bodily members as slaves to impurity and to [moral] lawlessness, leading to further lawlessness, so now offer your members [your abilities, your talents] as slaves to righteousness, leading to sanctification [that is, being set apart for God’s purpose].
I desire to remind you--although the whole matter is already familiar to you--that the Lord saved a people out of the land of Egypt, but afterwards destroyed those who had no faith.