A Real and Significant Biblical Contradiction?

[Godscreated]

And if the prophet be deceived when he hath spoken a thing, I the Lord have deceived that prophet, and I will stretch out my hand upon him, and will destroy him from the midst of my people Israel.
(Ezekiel 14:9)

And if the prophet gives a deceiving prophecy, then I the LORD have deceived him by not giving him the prophecy, I will make a fool of him before My nation, Israel, for trying to deceive them.

That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us.

(Hebrews 6:18)

The two verses have nothing to do with each other. I hope this clears things up for you.