When the king arises he blesses the name of God. We must remember that this is a man who had not believed in God, did not know if there was a God. After his experience, the king is now abundantly aware of God, and of the mercy of God. What is interesting is that he also calls his wife blessed. We do not know what has triggered this particular blessing. It is certainly deserved, but it is not known whether there was an experience particularly related to her that was fresh in his mind, whether he had been aware of the conversation with Ammon (which is certainly possible), or whether this is simply an expression of his love for her as he found her at his side.