If his sons should happen to increase, they will be for the sword, and his grandsons will not be satisfied with bread
Other versions
King James Version
If his children be multiplied, it is for the sword: and his offspring shall not be satisfied with bread.English Standard Version
If his children are multiplied, it is for the sword, and his descendants have not enough bread.New International Version
However many his children, their fate is the sword; his offspring will never have enough to eat.