The Four of Cups is related to routine, stagnation, dissatisfaction, boredom. Sometimes it points to an opportunity that goes unnoticed, while we focus on all the unpleasant things we experience. The King of Swords symbolizes the maturity of logic. For that reason, he has a bad reputation when it comes to feelings and indeed, this King will choose to do what is objectively right rather than what feels right. The King of Swords is associated with justice, communications, decisions, emotional detachment. The combination and of the Four of Cups and the King of Swords can predict disruptions in our routine caused by someone or something that attempts to take control of a situation.
To understand the elemental relationships between the cards, we should always take into account their actual meaning.The elements of the cards are Water (Four of Cups) and Air (King of Swords), emotions versus logic. The Knight of Swords being a card of control, will attempt to dominate and maintain the energies represented by the Four of Cups and in all likelihood, he will be successful.