Sorry, that term is not in the Bible which makes it unbiblical.
Having said that, his invocation of the Trinity to justify his claim that Jesus "said" Psalm 50 is too strained to be credible. The author of the Psalms wrote them under the inspiration of the Holy Spirit, a different person of the Trinity. No doubt Jesus ultimately shared responsibility in a very technical sense, but nobody would take that so far as FS did.