"Abba," the Aramaic word for "father," was sometimes used by Christ as a term for his true Father in heaven.
Jesus spoke Aramaic, almost certainly knew enough Hebrew to study the texts, and may have known some Greek too. Greeks, like the Romans, were all over the place. Must have been like that multicultural bar scene in Star Wars.
His use of "Dad" for God was transformational.
I do not view God as having any gender, but I love the way Christ spoke of God as his Dad. Real Dads, however much they may aspire to be role models and to be strong and reliable supports for their kids, are only human and thus always deeply flawed.
Yes, I greatly enjoyed Bruce's Father's Day post early this morning, especially the music. Jew, Christian, Moslem - whatever. If that song doesn't bring a tear, you have a problem. "Only you created tears, and only you can wipe them away forever."