We obey our Sovereign King. He said to go to all nations and make disciples. He has the authority to choose whom He wills to save. That is not my job. My job is to go and make disciples.
Matthew 28:18-20
[18]Jesus came and told his disciples, “I have been given all authority in heaven and on earth.
[19]Therefore, go and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit.
[20]Teach these new disciples to obey all the commands I have given you. And be sure of this: I am with you always, even to the end of the age.”
Our role is to be ambassadors of reconciliation. God's role is to do the reconciliation for whom He wills.
2 Corinthians 5:19-21
[19]For God was in Christ, reconciling the world to himself, no longer counting people’s sins against them. And he gave us this wonderful message of reconciliation.
[20]So we are Christ’s ambassadors; God is making his appeal through us. We speak for Christ when we plead, “Come back to God!”
[21]For God made Christ, who never sinned, to be the offering for our sin, so that we could be made right with God through Christ.