From Aspiring Polymathis, a great meditation on God’s sovereign drawing of His people:

After the disciples complain about these hard saying, Christ reminds them that the flesh (physical eating) profits nothing but ” ‘the words that I speak to you are spirit, and they are life. But there are some of you who do not believe.’ For Jesus knew from the beginning who they were who did not believe, and who would betray Him.” (v.63ff.)

And Christ continues: ” ‘Therefore I have said to you that no one can come to Me unless it has been granted to him by My Father.’ 66 From that time many of His disciples went back and walked with Him no more.”

What amazing words! What a stupendous mystery. When Christ says ‘therefore’ he is connecting their unbelief with the fact of God’s sovereignty: they cannot come to Christ unless such a movement has been granted to them by the Father.

I think that a careful and thorough study of John 6 is one of the best ways to understand the doctrine of predestination. Thanks, Pastor Mathis.