Post History

The answer is that it depends, and this is highly subjective. The question presupposed an epistemology not necessarily shared by all Christian, but I'm going to follow this for the sake of answering the question and make the case that this can't be _objectively_ demonstrated using _[a modern empirical epistemological approach](https://en.wikipedia.org/wiki/Empiricism)_ from the biblical texts for a variety of reasons, considering a few possible approaches as examples.

Some Christians would point to **fulfilled prophecies** as evidence of divine knowledge of the future. However, it's hard to demonstrate whether certain texts (i) originally prophesied about the supposed fulfillment event(s), (ii) actually were written _before_ the event(s) took place, and/or (iii) were understood as prophetic when originally recorded.

There are also instances of (fundamentalist) Christian apologists using anachronisms to **ascribe modern wisdom to ancient writers**. For example, such Christians might point to passages like [Isaiah 40:22](https://www.biblegateway.com/passage/?search=Isaiah%2040%3A22&version=KJV,ESV,NRSV,NASB) which mentions "the circle of the earth" as evidence of the biblical texts teaching a cosmology involving a spherical, rather than flat, Earth (see also Job 26:10 and Proverbs 8:27). However, this anachronistically reads our modern cosmology into ancient texts. When understood in context, ancient Israelites (along with their Mesopotamian neighbors) viewed the earth as flat with a dome over it to keep the waters at bay from above and below.[^1]

The biblical texts also talk about **life after death** (or rather, as N.T. Wright puts it, "life after life after death"). The ideas about this evolved over time as is evident within the texts themselves, and they borrowed ideas that were prevalent at the times of writing. This is also virtually impossible to verify via empiricism, unless you've died and come back from the dead. Christians point to Jesus as the One who has done just that, and is therefore uniquely qualified to teach about life.

This latter point depends heavily on one's views on biblical inspiration. In the perspective of Christians who don't outright reject critical biblical scholarship, biblical authors used the language and concepts with which their contemporary readers were familiar in order to convey ideas. Christians believe that God progressively revealed Himself to His people throughout history in ways that they could understand. The biblical texts are _incarnational_—that is, divine and human—just like Jesus. God's revelation also frequently mentions God's ineffable nature (e.g., Isaiah 55:9; Psalm 139:6; Romans 11:33–34). Arguably, human language (and our finite brains) are incapable of grasping an infinite divine being.

Again, not all Christians will agree on how to answer this question (nor share the epistemological assumptions inherent in the question). Some Christians may also vehemently disagree with my dismissal of some of the examples presented in this answer. However, from the worldview presupposed in the question, there is no such futuristic concept in the biblical texts; the authors used languages and ideas that were understood by the original audience.

[^1]: _See, e.g.,_ N. F. Gier, _God, Reason, and the Evangelicals_
(University Press of America, 1987), chapter 13: "The Three-Story Universe". https://www.webpages.uidaho.edu/ngier/gre13.htm