To live, to be alive, to have vitality. Zaō covers physical life, spiritual life, and eternal life. In the NT, true living goes beyond biological existence — it is life in relationship with the living God. The risen Christ says, 'I was dead, and now look, I am alive forever and ever' (Revelation 1:18).
Jesus' declaration 'I live, and you also will live' (John 14:19) makes His resurrection the source of all believer's life. Paul's creed: 'It is no longer I who live, but Christ lives in me' (Galatians 2:20). The OT background: 'Man shall not live by bread alone but by every word from God' (Deuteronomy 8:3/Matthew 4:4). True life is not survival but Spirit-empowered participation in God's own life.