A lot read The Bible and find out. While you're at it read the New Testament too. Or go to Church
King David is in the old testament.
He was a son of the king David.
She was the wife of King David in the Old Testament.
King David is an Old Testament personage and people from the Old Testament, even if they might be in Heaven, are not generally given the title of saint.
King David is an Old Testament patriarch and usually not accorded the title of saint.
Nebuchadnezzar?
Absalom was King David's son, in the Old Testament.
Are you referring to King David from the Old Testament? He is the patron saint of poets.
Which St. David are you talking about? There are several. If you are talking about KIng David from the Old Testament, the title "saint" is generally reserved to New Testament followers of Jesus Christ.
2 Samuel:6
The eighth book of the Old Testament is Ruth. It tells the story of a Moabite woman who becomes the great-grandmother of King David.
There are many New Testament saints named David so you will have to be more specific. If you are referring to King David from the Old Testament, they are generally not given the title of saint. King David is not listed as a patron saint. If you are referring to St. David of Wales, he is the patron saint of that country and of doves.