We all know a Knight.
They are the extroverts, the enthusiasts, the seekers. They charge and brandish and yell "Tally ho!" They like speed and adventure, and while they can be somewhat reckless, they are brimming with prowess and a heady, mercurial energy, like alternating current. If you can get them to concentrate, that is. And stop tilting at innocent windmills.
Knights are court cards, which have a reputation as being tricky to figure out. I suspect their openness to various interpretations is the reason. There are sixteen court cards in a traditional tarot deck—four in each of the four suits: a King and Queen and Knight and Page—and they can personify the querent, a person in the querent's life, or the energy of the suit as expressed by their role.
In our case, the Knight of Swords has come dashing into the fray (and if there wasn't a fray before he arrived, there is guaranteed to be one after). Does he represent you, riding headlong into a battle of wits that is occupying every iota of your attention? Or is he coming at you, sword aloft, and if so, is he seeking to entangle you in his adventure or whack you down as the enemy? (this is an important question, really important). Or perhaps you are dealing not with a person but with manifestation of some particularly feisty energy, in which case, be prepared for wild times of the intellectual sort.
Only you know the nature of this dashing Knight. All I can do is tell you to be on the listen for hoofbeats this week. Get ready to ride, or get ready to run. You'll be doing one or the other for sure.