The intersection of God's plan and our duty

As I thought about how this works, how God's plan intersects man's responsibility, and I thought of a more tangible example.

No one exists apart from the knowledge and will of God. God ordains, knits together, creates and orders the life of each person. Men like Moses and Abraham, John the Baptist, Paul, each of these men where called and used by God. Men like Pharaoh who were created for a purpose. We are each lumps of clay, and God is the potter. See Romans 9:19-24.

God has set aside and uses each person according to Romans 9, but with the exception of one person, every person has been conceived by the coming together or a man and a woman in the act of procreation. Aside from Jesus, Adam and Eve, everyone that God used in the scripture was born as a result as human action. . . and interaction.

Each child that is born is an combination of God's will and man's action. God works with the activity and duty of a man and a woman. The result is a miracle, but also a result of a biological action.