1 sn Appointed the Son-of-God-in-power. Most translations render the Greek participle ὁρισθέντος (Jorisqentos, from ὁρίζω, Jorizw) “declared” or “designated” in order to avoid the possible interpretation that Jesus was appointed the Son of God by the resurrection. However, the Greek term ὁρίζω is used eight times in the NT, and it always has the meaning “to determine, appoint.” Paul is not saying that Jesus was appointed the “Son of God by the resurrection” but “Son-of-God-in-power by the resurrection,” as indicated by the hyphenation. He was born in weakness in human flesh (with respect to the flesh, v. 3) and he was raised with power. This is similar to Matt 28:18 where Jesus told his disciples after the resurrection, “All authority in heaven and on earth has been given to me.”
2 tn Grk “spirit of holiness.” Some interpreters take the phrase to refer to Christ’s own inner spirit, which was characterized by holiness.
3 tn Or “by his resurrection.” Most interpreters see this as a reference to Jesus’ own resurrection, although some take it to refer to the general resurrection at the end of the age, of which Jesus’ resurrection is the first installment (cf. 1 Cor 15:23).
4 tn The phrase ἡ ἀγάπη τοῦ θεοῦ (Jh agaph tou qeou, “the love of God”) could be interpreted as either an objective genitive (“our love for God”), subjective genitive (“God’s love for us”), or both (M. Zerwick’s “general” genitive [Biblical Greek, §§36-39]; D. B. Wallace’s “plenary” genitive [ExSyn 119-21]). The immediate context, which discusses what God has done for believers, favors a subjective genitive, but the fact that this love is poured out within the hearts of believers implies that it may be the source for believers’ love for God; consequently an objective genitive cannot be ruled out. It is possible that both these ideas are meant in the text and that this is a plenary genitive: “The love that comes from God and that produces our love for God has been poured out within our hearts through the Holy Spirit who was given to us” (ExSyn 121).
5 sn On the OT background of the Spirit being poured out, see Isa 32:15; Joel 2:28-29.