He who has the Son has the life; he who does not have the Son of God does not have the life.1 John 5:12(NASB)
This verse is further Biblical clarification that eternal life is found only in Christ Jesus.. for He is the eternal Son of God and perfect Son of Man.
Men search in many places to discover eternal life outside of Christ - but it is not found in good works; denominational membership; philosophic teachings; scientific discovery; religious leanings; educational qualifications; legalistic practices; genetic modification or any of men's other attempts to attain perfection and everlasting life outside of God's declared way.
Simply stated: he who has the Son has the life and he who does not have the Son of God does not have the life. Sinners who believe in the death, burial and resurrection of Jesus Christ as their sin-substitute have the resurrected life of Christ within - and nothing can alter their eternal destiny.
Their salvation is by grace through faith in Christ's finished work on the cross, and forgiveness of sins and eternal life are two of many heavenly benefits that every sinner receives - by grace, through faith in the only begotten Son of God.
The Lord Jesus was declared to be the Son of God at His baptism, when the Holy Spirit descended on Him.. and a voice from heaven was heard to say: This is my beloved Son in Whom I am well pleased - and He proved to be the Son of God at the cross.. when as Son of Man He was lifted up at Calvary, having done all the things that the Father required - which so glorified His Father in heaven.
God Himself is witness to the world that: he who has the Son has the life and he who does not have the Son of God does not have eternal life.. for eternal life is in the Son. Those who believe God's witness of Christ.. have His resurrected life within - but those who have rejected God's witness are already condemned themselves, because they have not believed in the only begotten Son of God.
Heavenly Father, how I thank and praise You that I have received eternal life and the forgiveness of sin by trusting in Christ's finished work at Calvary. Help me to be a true witness to the simple yet profound truth that He who has the Son has the life and he who does not have the Son of God does not have His life. This I ask in Jesus name, AMEN,