Can God say no?

“After Nathan had gone home, the LORD struck the child that Uriah’s wife had borne to David, and he became ill.  
David pleaded with God for the child. He fasted and went into his house and spent the nights lying on the ground.  
The elders of his household stood beside him to get him up from the ground, but he refused, and he would not eat any food with them. 
On the seventh day the child died. David’s servants were afraid to tell him that the child was dead, for they thought, “While the child was still living, we spoke to David but he would not listen to us. How can we tell him the child is dead? He may do something desperate.” 
David noticed that his servants were whispering among themselves and he realized the child was dead. “Is the child dead?” he asked. “Yes,” they replied, “he is dead.” 
Then David got up from the ground. After he had washed, put on lotions and changed his clothes, he went into the house of the LORD and worshiped. Then he went to his own house, and at his request they served him food, and he ate.” 
                                                                        2 Samuel 12:15-20
I listened to a pastor not too long ago that said God always wants us to be healthy. I agree with that.
I think a loving God like any normal earthly parent wants their children to be healthy.
Unfortunately the pastor went on to say God will never refuse your request for anything.
This can’t be further from the truth. God does say no, again like any other normal earthly parent would. The above scripture proves that.
God said no to king David’s prayers when it came to the healing of his child with Uriah’s wife.
God also said no to Jesus. Matthew records,
“Going a little farther, he (Jesus)  fell with his face to the ground and prayed, “My Father, if it is possible, may this cup be taken from me. Yet not as I will, but as you will.” 
                                                                                                          Matthew 26:39.
God does say no. He knows what we can handle and allows us to go through many things we don’t necessarily want to go through.
I think we as believers and being human, cannot see the eternal reasons God allows us to go through something.
The child David prayed for, for example.
We have no idea what his living would do to the world around him.
Had he lived he may have come in conflict with Solomon the child David fathered after him (2 Samuel 12:24).
Instead God chose to call the child home to a much better place.
In the case of Jesus, his purpose in coming to the earth was to die for the sins of mankind. A fate he willingly accepted when God said no.
So the point here is that God does say no. He will not answer all our prayers in the way we want them answered.
God knows what is best for us. And if we are truly committed to God we must be willing to say as Jesus said “Yet not as I will, but as you will”
Think about it.