Revelation 3:14 And to the angel of the church in Laodicea write: ‘The words of the Amen, the faithful and true witness, the beginning of God's creation.
3:20 is in the context of the church of Laodicea, so Jesus is knocking on the door of that church, not on peoples hearts like so many people add to the Scripture.
That is the thing with anti-Calvinist and Arminian teachings - context has to be thrown out in order to use the text to prove their premise. Reformed theology holds to a very consistent hermeneutic, their theology does not. For example when we look at spiritual death, we see the total inability outside of God for the person to come to God. The term "dead" is "nekros" (a corpse). But what will happen to support free will is they will say "it only means separation from God" and then go into free will, and take Scriptures out of context.
The opposite of this "rule of interpretation" can be found in their treatment of "repentance." We see repentance as
a turning from sin, as context supports that definition. But many of the other camp will go to the strict definition of
"metanoia" (repentance) and say
"No, it only means change of mind, "metanoia" "a change of mind"!"
This shows the inconsistency of their hermeneutic: one term gets a
"spiritualized" definition
(nekros) departing from the true strict definition in order to
grant the spiritually dead an ability they do not have, while repentance on the other hand is
only its strict definition and cannot mean anything else
especially turning from sin.
But repentance must mean only its strict definition to them because
turning from sin, progressive sanctification, evidence of conversion must all be twisted into a
"works gospel" to derogate others. IOW repentance cannot be allowed to be seen as a lifestyle of turning from sin, some go as far as to say it isn't even necessary for salvation. To be fair not all those of the other camp(s) do this, but many do, and
they all hold to an inconsistent hermeneutic.