Four is the fourth sephirah Chesed on the Tree of Life relating to Jupiter. Four is solid and reliable while Jupiter is movement.
Daleth, a Door is the Hebrew letter.
Fours in the Minor Arcana
Magical Image of the Four of Swords In the third face of Libra ascends a violent man holding a bow, and before him a naked man, and also another man holding bread in one hand, and a cup of wine in the other; the signification of these is to shew wicked lusts,...
Divinatory meanings: Power
Divinatory meanings: Completion
The Magical image of the Third Face of Cancer in Picatrix In the third face of Cancer ascends a man a Hunter with his lance and horn, bringing out dogs for to hunt; the signification of this is the contention of men, the pursuing of those who fly, the hunting and...