"When David and Bathsheba sinned, instead of punishing them, god STRUCK the baby and after suffering for a week it died. God CAUSED that one in an unfair punishment on an innocent child."
Not true. Bathsheba was bathing because of the purification cleansing. Seven days after her period ends, she is unclean. That is when David saw her and took her and impregnated her. But a woman is infertile during that time. How did she conceive? My theory is that Jehovah made her conceive so that they even would play out and the truth would come out. The child would properly die because it never should have existed.