Arba (אַרְבַּע) is the Hebrew cardinal number four. In biblical numerology, four often represents completeness of the created order — the four corners of the earth, the four winds, the four rivers of Eden. It speaks to the totality of the physical world and its Creator's comprehensive sovereignty.
The number four in Scripture represents cosmic completeness: four living creatures around the throne (Ezekiel 1; Revelation 4), four corners of the earth (Isaiah 11:12), four Gospels, the four directions in which the Spirit moves. When God acts in fourfold ways, it signals universal scope — nothing in creation falls outside His reach or rule.