Agreed, but I think we are understanding the Bible differently. I pay close attention to grammar and this is what the passage says:
John 6
39And this is the will of him who sent me, that I shall lose none of all those he has given me, but raise them up at the last day.
40For my Father’s will is that
everyone who looks to the Son and believes in him shall have eternal life, and I will raise them up at the last day.”
The word "
believes" here is in the Present Participle Active tense. That means 10 years later you must be believing in God's Son, then, too. We are always currently in the present and must always be believing in Jesus in the present. Jesus didn't mean to believe in Him one time for a few minutes then stop and you're still good to go; the believing must continue, actively, in order to have eternal life.
This actually matters. A lot. I see this is a reoccurring problem for OSAS. They are ignoring some very fine, but critical, details.