[1:29] 2 sn Gen 22:8 is an important passage in the background of the title Lamb of God as applied to Jesus. In Jewish thought this was held to be a supremely important sacrifice. G. Vermès stated: “For the Palestinian Jew, all lamb sacrifice, and especially the Passover lamb and the Tamid offering, was a memorial of the Akedah with its effects of deliverance, forgiveness of sin and messianic salvation” (Scripture and Tradition in Judaism [StPB], 225).
[3:16] 3 tn Or “this is how much”; or “in this way.” The Greek adverb οὕτως (Joutws) can refer (1) to the degree to which God loved the world, that is, to such an extent or so much that he gave his own Son (see R. E. Brown, John [AB], 1:133-34; D. A. Carson, John, 204) or (2) simply to the manner in which God loved the world, i.e., by sending his own son (see R. H. Gundry and R. W. Howell, “The Sense and Syntax of John 3:14-17 with Special Reference to the Use of Οὕτως…ὥστε in John 3:16,” NovT 41 : 24-39). Though the term more frequently refers to the manner in which something is done (see BDAG 741-42 s.v. οὕτω/οὕτως), the following clause involving ὥστε (Jwste) plus the indicative (which stresses actual, but [usually] unexpected result) emphasizes the greatness of the gift God has given. With this in mind, then, it is likely (3) that John is emphasizing both the degree to which God loved the world as well as the manner in which He chose to express that love. This is in keeping with John’s style of using double entendre or double meaning. Thus, the focus of the Greek construction here is on the nature of God's love, addressing its mode, intensity, and extent.
[3:16] 4 tn Although this word is often translated “only begotten,” such a translation is misleading, since in English it appears to express a metaphysical relationship. The word in Greek was used of an only child (a son [Luke 7:12, 9:38] or a daughter [Luke 8:42]). It was also used of something unique (only one of its kind) such as the mythological Phoenix (1 Clement 25:2). From here it passes easily to a description of Isaac (Heb 11:17 and Josephus, Ant. 1.13.1 [1.222]) who was not Abraham’s only son, but was one-of-a-kind because he was the child of the promise. Thus the word means “one-of-a-kind” and is reserved for Jesus in the Johannine literature of the NT. While all Christians are children of God (τέκνα θεοῦ, tekna qeou), Jesus is God’s Son in a unique, one-of-a-kind sense. The word is used in this way in all its uses in the Gospel of John (1:14, 1:18, 3:16, and 3:18).