What is the meaning of 'perfect peace' in the Bible?

'Perfect peace' is described in Isaiah 26:3 as a state of comprehensive understanding and calm that God provides. This peace is not contingent on external circumstances but is rooted in the believer's relationship with God. It embodies wholeness and completeness, signifying the absence of conflict—both internally and externally. This peace can only be achieved through the deep knowledge of God’s sovereignty and love, allowing believers to rest in Him completely, regardless of what life may bring.