The notion of confession comes up very frequently in the scriptures, though not always by name.
I think we've acquired a certain narrow sense of confession by some Roman and Lutheran teachers who imply that confession is only something done in the meaning of "confessing our sins."
Which is certainly a part of confession. But confession in the scriptures also seems to entail correction, admonition, godly counsel, and privately teaching the Christian about this or that doctrine.
Here's an example, done in King Hezekiah's temple restoration:
"And Hezekiah spake comfortably unto all the Levites that taught the good knowledge of the LORD: and they did eat throughout the feast seven days, offering peace offerings, and making confession to the LORD God of their fathers." (2 Chronicles 30.22)