Is the harmonization that God grants all people repentance and saving knowledge? Or is it that God grants all people the ability to repent, but some/most choose not to do so?
Here is a (less than perfect) analogy:
-Every person born has a built in spiritual "receiver" (Rom 1) by which they can receive Gods truth.
-God has been "broadcasting" His "true signal" (His Word of Truth) from long long ago (Heb 1:1-2).
-Every man may CHOOSE to tune in to this "signal" (which is emitting 24/7) with his "receiver".
-Those who DO choose to tune in and STAY TUNED in to it are those who "abide", and know the truth and are set free
(John 8:31-32, 36, John 15).
-Those who tune in for a while
and then tune out are the rocky/thorny soil (Luke 8)
-Those who tune in and STAY tuned in are also the good soil and then bear fruit (Luke 8 et al)
Every man knows the frequency of Gods signal, and tuning in (or not) is a choice predicated upon an ACT OF FREE WILL.
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BTW, the fact that God engages man by means of permissive covenants utterly
obliterates the pretentions of the hyper-Calvinites. Covenants have been and can be broken.
Even the "younger son" ADAM (the latter king of Eden)
willfully broke the Adamic covenant (see Luke 15).
And the "older son" SATAN (the former king of Eden)
willfully rebelled against the Father as well (Luke 15)
and wanted to kill the "younger son" and the Father as well.