No One Can Come To Me Unless

Why can't they come to Jesus and be saved?
God the Father has not drawn them: "No one can come to Me unless the Father who sent Me draws him" (John 6:44).

What can be drawn from John 6:44 and Ephesians 1:4-5 (see Will of the Father)?
"No one can come to [Jesus] unless" God "chose" that person "before the creation of the universe." If you are a Christian, take a moment to let that sink in: God chose you before He created the universe.

But how is that just to those who weren't chosen?
To our minds, that doesn't seem just. But God declared Himself just - "There is no other God besides Me, a just God and a Savior; there is none besides Me" (Isaiah 45:21) - so His choice before creation of who will come to Jesus and receive everlasting life is also just. When we get to heaven, we will see the full picture and understand why God's choice was entirely just. Until then, when human reasoning collides against God's declaration, our fallible reasoning must submit to God's infallible truth.

Since God chose before He created the universe and He will make sure that everyone He has chosen will be saved, why should we evangelize and potentially get in God's way?
God can save anyone without using anyone, but it is His will to use us. Nothing in the verses above or anywhere else in the Bible negates His equally important command for us to “Go into all the world and proclaim the Gospel to every creature" (Mark 16:15).

How does the fact that He chooses affect how we proclaim the Gospel?
Knowing that we can't get someone saved who wasn't chosen or mess up the salvation of someone who has been chosen is reassuring and liberating. Since God is the One who chooses and saves, we can focus on simply sharing with "every creature" the Gospel accurately, without additions or deletion or trying to guess who has or hasn't been chosen, or using man-made tactics to get people to say a prayer that supposedly gets them saved.

But can't we kind of tell who has and hasn't been chosen?
Imagine that the day before Jesus' crucifixion, two men are placed before you and you are asked to guess which one will go to heaven and which one to hell: one is Judas Iscariot and the other is a convicted criminal in Pilate's dungeon awaiting execution. Your answer would be easy, for Judas is one of Jesus' top twelve disciples, while the other man is a convicted death row inmate. Yet, Judas to hell and the criminal went to heaven (see Criminals on the Cross).