How come God had to send His only son to Earth to accomplish what he wanted accomplished? Why didn’t God just talk to someone else and tell them what to do? (kinda like Noah) So Jesus, being his “Only Son” does that mean he can’t send another person to earth now?
God has asked many men and women to accomplish things for Him both before and after the cross. But in this case, the work that God wanted to accomplish was redeeming mankind from our bondage to sin. This required the death of a sinless man. Since there has never been a sinless man, no one on Earth was qualified to do this. So God Himself became a man in the form of His Son and died for us. Any work that requires someone who is both God and man has to be accomplished by His Son.