The chastisement is not children, but the sorrows connected with childbearing. Besides, the entire Old Testament contradicts the teaching that children are a curse. Happy is the man whose quiver is full of them. Children are a blessing. Many children are a blessing.
Every child is a blessing to believing parents.
The 8th child is a blessing. The deformed child is a blessing. The difficult child is a blessing. But a blessing of God, nevertheless. Again, not because they are all elect.