39 This is the will of the Father who sent Me, that of all He has given Me I should lose nothing, but should raise it up at the last day. 40 And this is the will of Him who sent Me, that everyone who sees the Son and believes in Him may have everlasting life; and I will raise him up at the last day.”
Verses 39 and 40 reassert and reaffirm the previous argument. Anyone who believes on Jesus has his eternal destiny secure. God gives eternal, not temporal, life to every believer.
Note the two “this” words in this verse and next.
is the will of the Father who sent Me,
God has an absolute plan that does not vary. This plan guarantees salvation in Christ.
that of all [everything] He has given Me I should lose nothing,
Christ is the guardian of our salvation. Jesus will not suffer a single loss of any soul who believes on Him (Jn 6:37).
but should raise it up at the last day.
Every last person who believes on Christ will be raised unto eternal life in the resurrection “at the last day.”
The second “this” answers the question of verse 28: “What shall we do that we may work the works of God?”
is the will of Him who sent Me,
The will of the Father is clear about His sending of the Son into the world.
that everyone who sees the Son
First, it is important to grasp who the Son is. The word “sees” means to gaze intently to understand or know it.
and believes in Him
Once a person grasps the significance of why the Father sent the Son, there is one fundamental necessity—to believe “in Him.”
may have everlasting life;
If anyone meets the condition of believing in Jesus, he will have eternal life.
and I will raise him up at the last day.”
One day there will be a guaranteed bodily resurrection for those who believe in the Son.
God assures salvation to every person who believes on Christ.
Eternal security is a foundation of salvation. The Father’s and the Son’s will is to preserve those who believe. It is not possible for a person to lose his salvation.
When it comes to salvation, the Bible teaches that God decreed salvation that would never change, an inheritance that cannot be defiled and a seal that no one can break.
For a further study on eternal security, go to http://versebyversecommentary.com/articles/doctrine/eternal-security/