Of course, all those physically alive exist, but not everyone that exists is living!
Jesus said My words are spirit and they are life–John 6:63. Ponder the depth of Christ’s comment. Those words from the Son of God tell us that apart from a relationship with Jesus, only possible through faith in Him, an individual exists, has physical life, but is dead spiritually, cut off from the life, the eternal life of God–Ephesians 4:18; Ephesians 2:1, 4-5; Colossians 2:13.
Jesus also said that He is the way, the truth, and the life–John 14:6. That statement also tells us that life, eternal life, is not just in Jesus, but that He is life. When we enter into a relationship with Jesus, by faith in Him, we enter eternal life: John 3:16, John 3:36, John 5:24, John 6:40-47; John 20:31; 1 John 5:11-13; 1 John 5:20.
In John 11:25-26, Jesus tells us that those that believe in Him, have faith in Him, even while they physically exist, will pass from a state of eternal death to eternal life – John 5:24; Romans 6:23; Ephesians 2:4-5.
What you’ve read above explains why Jesus lamented that people will not come to Him, in faith, that they may receive life – John 5:39-40 and they will be filled with the bread of life – filled with Jesus Himself – John 6:35 – filled with eternal life and never-ending quenching – fulfillment of all needs: John 4:14; John 10:10, 27-28.
The requirement to pass from death to life – from eternal death to eternal life is to believe on Jesus as the scriptures say – John 5:39-40; John 7:38 and be filled with the promise of God - the indwelling presence of the Holy Spirit within believers that gushes out and touches others with the river of life John 7:38-39; Ephesians 1:13-14; Romans 8:9; Galatians 3:14; 1 Corinthians 12:13, and empowers believers in Christ to be effective witnesses of the love, mercy and salvation of God that comes through faith in Christ – Matthew 28:19-20 and Acts 1:8.
So, my plea from my heart to you today is to stop existing and begin living, living by faith in Christ, being transformed from spiritual death to life, all to the glory of God, in the precious, loving, merciful, redemptive name of Jesus Christ - Acts 4:12, and Acts 2:21, amen.