St Augustine is the source of some great ideas that got into the work of Jewish scholars during the Middle Ages. However when people borrow from him or any Christina source, the source of the idea is usually not given. But even more than specific idea there is his whole Neo Platonic approach which became part and parcel of approved Jewish thought--mainly starting with Saadia Gaon.
One of the well known ideas of Augustine is that time is a creation. But there are many more.
One of the well known ideas of Augustine is that time is a creation. But there are many more.