"And this is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent" (John 17:3).
Many are being deceived in this hour by those that name the name of Jesus, thinking that it is enough just to name His name, just to be sincere. But being sincere is not enough. We must move in truth. Jesus said, "When I come, will I find faith?" (Luke 18:8) Faith brings us into the reality of what we have been discussing, our union with God. We live in faith. We're not like the saints of old that just heard God and responded to what God said. We now have the living Word within us, the Holy Spirit indwelling us, and we now live by faith. We walk in union with God. We live His life by faith.
Eternal life is not a doctrine. Eternal life is knowing God and experiencing God right now. It's not just living for eternity. We already will exist for eternity whether we receive Christ or not. God has made us that way. The question is where we will spend eternity. God has made the way for us to walk now in His will, to do His purpose and be brought into the fullness of this oneness with God--that we all may be made one in Christ Jesus. The work has all been done, and will be done according to His power and His working, by the indwelling Spirit He has given.
If we have the Son, we have eternal life. If we continue in faith, we will know the glory of God's presence for all eternity. Peter tells us, "If these things be in you and abound..." (II Peter 1:8) and "...give diligence to make your calling and election sure: for if ye do these things, ye shall never fall" (v. 10).