255. (Verse 22). He that hath an ear, let him hear what the Spirit saith unto the churches. That this signifies that he who understands should hearken to what the Divine truth proceeding from the Lord teaches and says to those who belong to His church is evident from what was said and shown above (n. 108).

In Zechariah 8:12, 'the vine shall give her fruit, and the ground her increase,' signifies that the spiritual affection of truth produces the good of charity, and the natural affection of good and truth produces the works of charity.

(References: Apocalypse Explained 695)