Galatians 1:8-9

However, if we [apostles] or even an angel [claiming to be] from heaven were to preach any other "gospel" than the one we have [already] preached to you, let that person be cut off from God's [salvation].

Revelation 3:19

"I rebuke and discipline those I love, so be earnest and repent.

Treasury of Scripture Knowledge

Summary

And he cried unto the man of God that came from Judah, saying, Thus saith the LORD, Forasmuch as thou hast disobeyed the mouth of the LORD, and hast not kept the commandment which the LORD thy God commanded thee,

Thus saith

Thou hast disobeyed

Bible References

Thus saith

Galatians 1:8
However, if we [apostles] or even an angel [claiming to be] from heaven were to preach any other "gospel" than the one we have [already] preached to you, let that person be cut off from God's [salvation].

Thou hast disobeyed

Revelation 3:19
"I rebuke and discipline those I love, so be earnest and repent.