A  ¹ Paul, a bondservant of Jesus Christ, called to be an apostle, separated to the gospel of God

B  ² which He promised before through His prophets in the Holy Scriptures, ³ concerning His Son Jesus Christ our Lord, who was born of the seed of David according to the flesh, ⁴ and declared to be the Son of God with power according to the Spirit of holiness, by the resurrection from the dead.

A’  ⁵ Through Him we have received grace and apostleship for obedience to the faith among all nations for His name, ⁶ among whom you also are the called of Jesus Christ; ⁷ To all who are in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father and the Lord Jesus Christ.

A:  Paul. Called. To (eis, “for”) the Gospel of God.
B:  The Supremacy of Jesus Christ. His Characteristics.
A: The Recipients. Called. For (eis) Obedience to the Faith.