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Paul begins his letter to Rome with several clear, undeniable statements of fact:

1.Being an apostle makes him an agent of God’s gospel
2.The gospel was promised through the Hebrew Scriptures
3.The gospel is about God’s son
4.God’s son is the son of David by flesh
5.He is declared to be God’s son by resurrection from the dead
6.There is no doubt who this is – Jesus Christ our Lord
7.And it is through him that Paul receives his apostleship.

All of these ideas are intertwined. They come full circle. Paul works his way from his apostleship to Christ’s sovereignty and then backs out to his apostleship. Everything revolves around Jesus.
But don’t forget that this is just an introduction. Paul is not asserting anything new. Everything he states is assumed knowledge. This is stuff everyone he writes to should take away from the message of the gospel. To Paul, this is the “no brainers.”

And by the way:

1.You are loved by God
2.You are called to be saints

In one of the more interesting grammatical forms of Greek, when you want to emphasize the connection of two elements of a list, you do not include a conjunction [και]. Instead, you list them as two verbs in succession. You get something like this: All God-loved, saint-called.

This isn’t exact because Paul uses both the genitive and dative tenses on God and saints respectively. But the point is still the same. These words are listed this was because they are one-in-the same. To be loved by God is to be called to be saints.