No person comes to to the Son,unless the Father draws them.
No person says Jesus is Lord,but by the Holy Ghost.
Every person that confesses Jesus Christ is come in flesh,is of God.
Many are called,but few are chosen,and not many wise after the flesh,and not many mighty,and not many noble,are called.
God knows the heart condition of every person on earth,and if their heart condition is in the right position,God will call them,and work with them to go towards the truth.
We have to have faith when we confess Christ,but God intervened in our life to make it easier to go in the direction of truth,so while we have to have faith,there is help from God to see the truth more clearly than on our own.
But this faith still has to come from us,but God helped us along the way when He called us,but not as much help as a person that has received the Spirit.
When a person receives the Spirit then they have more help,and witness,that can increase their faith,for the Spirit will show them things,and work in their life,that exceeds when they were called,when God was working with them.
When a person is called,God works with them to get them to the truth,but the faith still has to come from them,but they had help from God,for no person comes to the Son,unless the Father draws them,but after they have the Spirit,then their faith will increase,for God is working a lot more in their life than when they were first called.
God gets the glory for us being saved,when we are first called,until we receive the Spirit,that is why He chose us,we did not choose Him,for before we knew God in the truth,God called us,and worked with us,and we could of not gotten to the truth with His intervention.
Many claim Christianity,but not all got to the point of truth,but many have been called,and they can still have the opportunity to see truth,for God will still work with them.
Many are called,but few are chosen,for not everybody that has been called get to the point of being chosen,for they never accepted the truth,and received the truth,although their heart condition was right enough to be called.