God the Holy Spirit gave Jacob the words he was to say over his sons. God knows exactly what is going to happen all the time. It was God's will and plan that Jesus should die on the cross for our sins. He plans each day exactly the way it is supposed to be. We don't need to fear people, we need to fear God. Jesus is the only One who lived as fully man who never sinned. All that matters is that we live for Jesus.
If we are in Christ, we do not have to be afraid, even in a dungeon. Joseph's master Potiphar could have had Joseph killed, but instead, he had Joseph thrown in a dungeon. There are times when we will pray and God will not answer the way we would like. We might be tempted to think that God is against us, but that is not how we should think. Some people only study the Scriptures so that they can try and manipulate God to get what they want. Instead, we need to pray to God, let Your Kingdom come and Your will be done. There is never a panic in Heaven. If we love God, all will go well. If we know God, whatever is happening is within His sovereign control. God has all power.
It's good to have boundaries. Abraham knowing this made a public transaction to purchase burial land from the Hethites. This would matter not only for his time but also for future generations. We need to be prepared for our final resting place. Our bodies that wear out will come back as a resurrected body if we are in Christ. God will bring us back as something beautiful in the resurrection. Abraham knew that physical death is not the end.