The Reformed/Calvinistic view, is that it teaches "Predestination" of individuals to eternal life.
The context and Greek grammar is clearly against this.
Firstly, the Greek word rendered "ordained", is the verb, "τάσσω", which has nothing to do with any "preordaining" or "predetermined", or "pre" anything. It simply means, "appoint, form, array, marshal", with nothing "before" in the verb.
Secondly, for those who know some Greek grammar, like some on here, they should know, that Greek verbs that are passive and middle in "voice" (action), are not always easy to determine, as contextual usage is looked at to see what is meant. In verse 46 it is very clear, that the Jews heard the Gospel, and "they considered themselves (self action, middle voice) unworthy of eternal life", not something that God has predetermined through "election". Then Paul takes this same Message to the Gentiles, who were told "were pleased" to hear, and therefore "marshaled themselves", by their accepting this message, with the Lord. Where again the "middle voice" is understood. I was challenged by someone here on this, and produced some Greek scholars who have shown what I say to be correct!
Ones personal theology should have noting to do with our determining of any passage of Scripture.