Apocalypse Explained # 241
241. Verse 18. I counsel thee, signifies the means of reformation of those who are in the doctrine of faith alone. This is evident from what now follows, for the reformation of those who are in that doctrine is now treated of; therefore "I counsel thee" implies precepts as to how such must live that they may be reformed and thus saved.
Isaiah 56:4-5
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For thus says Yahweh, "To the eunuchs who keep my Sabbaths, and choose the things that please me, and hold fast my covenant:
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to them I will give in my house and within my walls a memorial and a name better than of sons and of daughters; I will give them an everlasting name, that shall not be cut off.