Did God choose the believers before the foundations of the world?

"3 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, 4 just as He chose us in Him before the foundation of the world, that we would be holy and blameless before Him." (Ephesians 1:3-4) In the above verse the Apostle Paul writing to the believers at the church in Ephesus is declaring that God the Father chose 'us' i.e. the believers, before the foundation of the world. If that were the case all the believers whoever was and is and will be believing in Jesus and thus become believers only those people were chosen to become believers much before their creation. That's basically predestination of certain individuals to become believers. However, that effectively leaves out all those who are not chosen by God to go to hell. In other words, it is God who creates certain individuals meant to go to heaven and others to hell. If the above statements were to be true, then, God will be unjust and unloving. Furthermore, it will be unfair for God to command his people to preach the gospel to all creation. In the light of the above conundrum how to understand "God chose us before the foundation of the world?"