7. He that hath an ear--This clause precedes the promise in the first three addresses, succeeds it in the last four. Thus the promises are enclosed on both sides with the precept urging the deepest attention as to the most momentous truths. Every man "hath an ear" naturally, but he alone will be able to hear spiritually to whom God has given "the hearing ear"; whose "ear God hath wakened" and "opened." Compare "Faith, the ears of the soul" [CLEMENT OF ALEXANDRIA].
      the Spirit saith--What Christ saith, the Spirit saith; so one are the Second and Third Persons.
      unto the churches--not merely to the particular, but to the universal Church.
      overcometh--In John's Gospel (Joh 16:33) and First Epistle (1Jo 2:13, 14; 5:4, 5) an object follows, namely, "the world," "the wicked one." Here, where the final issue is spoken of, the conqueror is named absolutely. Paul uses a similar image (1Co 9:24, 25; 2Ti 2:5; but not the same as John's phrase, except Ro 12:21).
      will I give--as the Judge. The tree of life in Paradise, lost by the fall, is restored by the Redeemer. Allusions to it occur in Pr 3:18; 11:30; 13:12; 15:4, and prophetically, Re 22:2, 14; Eze 47:12; compare Joh 6:51. It is interesting to note how closely these introductory addresses are linked to the body of Revelation. Thus, the tree of life here, with Re 22:1; deliverance from the second death (Re 2:11), with Re 20:14; 21:8; the new name (Re 2:17), with Re 14:1; power over the nations, with Re 20:4; the morning star (Re 2:28), with Re 22:16; the white raiment (Re 3:5), with Re 4:4; 16:15; the name in the book of life (Re 3:5), with Re 13:8; 20:15; the new Jerusalem and its citizenship (Re 3:12), with Re 21:10.
      give . . . tree of life--The thing promised corresponds to the kind of faithfulness manifested. They who refrain from Nicolaitane indulgences (Re 2:6) and idol-meats (Re 2:14, 15), shall eat of meat infinitely superior, namely, the fruit of the tree of life, and the hidden manna (Re 2:17).
      in the midst of the paradise--The oldest manuscripts omit "the midst of." In Ge 2:9 these words are appropriate, for there were other trees in the garden, but not in the midst of it. Here the tree of life is simply in the paradise, for no other tree is mentioned in it; in Re 22:2 the tree of life is "in the midst of the street of Jerusalem"; from this the clause was inserted here. Paradise (a Persian, or else Semitic word), originally used of any garden of delight; then specially of Eden; then the temporary abode of separate souls in bliss; then "the Paradise of God," the third heaven, the immediate presence of God.
      of God-- (Eze 28:13). One oldest manuscript, with Vulgate, Syriac, and Coptic, and CYPRIAN, read, "MY God," as in Re 3:12. So Christ calls God, "My God and your God" (Joh 20:17; compare Eph 1:17). God is our God, in virtue of being peculiarly Christ's God. The main bliss of Paradise is that it is the Paradise of God; God Himself dwelling there (Re 21:3).

JFB.