In general if a person says i will bring you some tomatoes tomorrow. I simply believe what this person said to me, then i have believed in this person and their promise to bring me tomatoes tomorrow.
Now concerning God's promise of Eternal Life. God has made a promise that anyone who believes in Jesus. That Jesus is the promised Messiah, Son of God and is the resurrection and the life has believed in Jesus and has received God's free gift of Eternal Life.
Believe "...IN...", or "...INTO..."... What exactly is it?
Well... In a superficial manner, that is what a person may tell themselves... Meaning... You tell yourself that you "...have believed in this person and their promise to bring [you] tomatoes tomorrow..."... But the truth is... You have believed in yourself, by your own reasoning of what you think this person will do.
Do you see that... You believed in your own reasoned conclusion of this person saying they will bring you tomatoes tomorrow.
You haven't actually believed in them, you believed in yourself... In your reasoning that you projected onto the person.
If you were walking along a street in the middle of a city and some stranger wearing a clown costume walked up to you and said that they would bring you tomatoes tomorrow, would you believe them?
I doubt it... More like you'd think it was some prank being filmed for YouTube.
Personal perception of what is taking place is what your thoughts would be related to... And in the case of Jesus, most people use their natural human reasoning to conclude that believing the gospel that they have heard makes sense and so they choose to believe in Jesus out of their natural human reasoned conclusion.
But that's not how the salvation economy of God works... It's not how God's salvation by grace economy works... As God's salvation by grace economy includes no natural man effort... This means, that there is no place for any natural human reasoned conclusion in the salvation of a person by God.
So to use your tomato analogy properly in regards to God's economy for the salvation of man... It would mean that the clown would simply walk up to you with a basket of tomatoes, offer them to you, and you would spontaneously reach out and take them without any reasoned thought.
To believe in[to] Jesus is to simply be spontaneously captured by who He is and what He has done... To be spontaneously captured by His beauty... Just as you would be captured by the beauty of a wonderful sunrise taking place over distant mountains... Or the beauty of a flower you're walking by... Totally spontaneous without any need for a natural human reasoned thought about it.
That's the reality of the experience of the salvation of God by His grace... No natural human effort (which is just the basis of works)... Just all the work of God.
And so, without the proper understanding of this reality of God's salvation, a person will not properly understand what has actually taken place... And this lack of understanding will continue into their day-to-day relationship with God... Meaning, they will continue to think that their relationship with God is one that is based on their natural man reasoning... Which is just error before God.
And this is clearly presented to us at the beginning of Isaiah chapter 6, in which we see Isaiah seeing a vision of God, and then immediately seeing his own poor condition, and declaring it, upon which, immediately "...the seraphim flew..." to Isaiah "...with an ember...", touched Isaiah's mouth with it, and immediately his "...iniquity [was] taken away, and [his' sin [was] purged."... Which is a picture of God's salvation economy for man.|
And it all happened to Isaiah without him having to reach any conclusions from his natural man reasoning.
This being the reality of God's salvation of man... That man has no part in it other than to receive what God gives, and even our receiving ability is of God (no man comes to God of our own accord, God must draw us to Himself)... The phrase "...believe in...", when consider as something that man does in and out of our natural man... Is just error.
Whereas, to "...believe in[to]..." defines what actually takes place... As God draws us "...into..." His economy of salvation for man.
Before a person is saved, this person is just in death and darkness... Which is just nothingness before God... And nothingness cannot produce anything good (of life) before God... And so God must choose within Himself to draw dead nothingness to Himself and give this dead nothingness eternal life.
And God carries this out... in... Christ Jesus (all things are in Him, through Him, and unto Him)... This is why God causes the person that He is saving to be drawn... INTO... Christ Jesus... By causing that person to believe... INTO... Him.
And this is why the Greek word used in John 3:16 isn't "...en..." (transliteration), which means in... But is "...eis..." (transliteration), which means into.
Amen.