The verses in Hebrews are addressed to believers who the writer is attempting to move on to Christianity. Keep in mind the early church was often a subset of the local synagogue. Many still retained a lot (if not all) of their Jewish beliefs and practices and added Jesus' teachings to it. John is addressed (I believe) to the same group. So, the writer wants the hearer to not be stuck only on the "foundation" of repentance from dead works, faith in God, baptisms, etc. These are all doctrines that Judaism and Christianity have in common. He wants them to move beyond their Judaism to "perfection."
He then addresses something far worse than remaining at a standstill in the Christian life. He is probably adressing readers who are losing the will to persevere (10:35ff, 12:3,12). More to come. Thanks for your patience.
And thank you all for your cordiality.
We always enjoy new contributors (have you been here earlier?)
Yes, I posted to The Chronicles a while back. I was in a discussion with angelo about various Messianic Prophecies in the OT (TANAKH). I am trying to get into the habit of posting more, usually I just lurk.
I look forward to the rest of your answer.
-ksen