But Christ clearly told us in Matthew 22 that David called Him 'Lord' in Psalm 110. So how was David in 900 BC able to call Jesus 'Lord' when Jesus was not already incarnate?

Christ does not say, nor do we see anywhere else in Scripture, how much David actually 'knew,' nor how much Abraham actually 'knew' when Christ said Abraham looked forward to His day, and rejoiced. No such explicit rejoicing is mentioned in Genesis. But they were regenerate and trusting in Christ, nonetheless.

Regarding the Orthodox Jews, they are still blinded by the veil of Moses, and obviously are not regenerate. David WAS. So was Moses, so was Elijah, and so they spoke with Jesus at the transfiguration.

Now we are talking distinctives between dispensational and covenant theology, which speaking about the Psalms helps place in sharp focus.

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Randy Harris
Heritage Church (Independent)
Oklahoma City, OK