The second Psalm, from which Paul's first quotation is made, is prophetic of Christ, inasmuch as it represents in vivid lyrical language the vain rebellion of earthly rulers against Messiah, and Jehovah's establishing Him and His kingdom by a steadfast decree. Peter quoted its picture of the rebels, as fulfilled in the coalition of Herod, Pilate, and the Jewish rulers against Christ. The Messianic reference of the Psalm, then, was already seen; and we may not be going too far if we assume that Jesus Himself had included it among things written in the Psalms 'concerning Himself,' which He had explained to the disciples after the Resurrection. It depicts Jehovah speaking to Messiah, _after_ the futile attempts of the rebels: 'This day have I begotten Thee.' That day is a definite point in time. The Resurrection was a birth from the dead; so Paul, in Colossians i. 18, calls Jesus 'the first begotten from the dead.' Romans i. 4,'declared to be the Son of God ... by the resurrection from the dead,' is the best commentary on Paul's words here. The second and third quotations must apparently be combined, for the second does not specifically refer to resurrection, but it promises to 'you,' that is to those who obey the call to partake in the Messianic blessings, a share in the 'sure' and enduring 'mercies of David'; and the third quotation shows that not 'to see corruption' was one of these 'mercies.' That implies that the speaker in the Psalm was, in Paul's view, David, and that his words were his believing answer to a divine promise. But David was dead. Had the 'sure mercy' proved, then, a broken reed? Not so: for Jesus, who is Messiah, and is God's 'Holy One' in a deeper sense than David was, has not seen corruption. The Psalmist's hopes are fulfilled in Him, and through Him, in all who will 'eat' that their 'souls may live,' III. But Paul's yearning for his brethren's salvation is not content with proclaiming the fact of Christ's resurrection, nor with pointing to it as fulfilling prophecy; he gathers all up into a loving, urgent offer of salvation for every believing soul, and solemn warning to despisers. Here the whole man flames out. Here the characteristic evangelical teaching, which is sometimes ticketed as 'Pauline' by way of stigma, is heard. Already had he grasped the great antithesis between Law and Gospel. Already his great word 'justified' has taken its place in his terminology. The essence of the Epistles to Romans and Galatians is here. Justification is the being pronounced and treated as not guilty. Law cannot justify. 'In Him' we are justified. Observe that this is an advance on the previous statement that 'through Him' we receive remission of sins.