Every cult and false religion challenges the Trinity and a lot of Christians don't have answers. This will be a simple but detailed examination of how we support the Trinity with the Bible AND how to answer 7 of the typical questions that generally stumble Christians on the topic of the Trinity.
If you prefer a book resource I recommend James White's book The Forgotten Trinity. It is accessible and scholarly at the same time and deals with many of the attacks on the Trinity. This is an affiliate link to the book "The Forgotten Trinity" https://amzn.to/2CYzx0r