From the parable of the friend at midnight we learn that

The parable of the friend at midnight is a story that Jesus told to teach us about prayer. The story is about a man who goes to his friend's house at midnight to ask for some bread. At first, the friend doesn't want to get up and give him bread, but eventually, he does because of the man's persistence.

From this story, we learn that we should always ask God for what we need. Option A is the correct answer because it captures the main message of the parable. Just like the man in the story, we should persistently ask God for what we need.

Option B is not correct because it suggests that an evil father can give good gifts, which is not true. Option C is also not correct because it suggests that anyone who asks for the Holy Spirit will receive Him, but this is not always the case. Finally, option D is not correct because it suggests that we should only make our requests at midnight, which is not the lesson that Jesus intended to teach.

In summary, the parable of the friend at midnight teaches us the importance of persistent prayer and asking God for what we need. To learn more about this, please read the relevant sections of the recommended textbooks.