Genesis 38:27-30
Isn't Perez and Zerah's birth interesting?  Doesn't it remind you of Esau and Jacob's birth?  In Genesis 25:22-25, the LORD told Rebekah she would give birth to twins and the older would serve the younger.  This also proves to be the case with Perez and Zerah.  While thinking about "the older shall serve the younger," I realized the same thing happened with Jacob's sons.  Joseph's dreams of his older brothers bowing down to him proved to be true.  Additionally, with Joseph's sons, Ephraim and Manasseh, the younger superseded, the older (Genesis 48:13-20).  So this role reversal happened in Isaac, Jacob, Judah and Joseph's families.  I wish I could explain some deep spiritual meaning to this repeated relationship, but I can't.  Maybe someone else reading this can.  Oh, by the way, to see the significance of Perez, examine the lineage of Jesus in Matthew 1:3

Mark 8:32-33
"Peter took him aside and began to rebuke him.  But turning and seeing his disciples, he rebuked Peter and said, 'Get behind me, Satan!  For you are not setting your mind on the things of God, but on the things of man.” 

Peter's action and words of rebuke to Jesus' statement about His death and resurrection are a perfect example of worldliness.  Thinking based on a human point of view is Satanic!  1 John 2:15 and James 4:4 plainly state a person can't love the world and God—to be a friend of the world is to be an enemy of God.  Jesus' rebuke of Peter is a simple statement of that principle.

Almighty Sovereign LORD, I want this to be a ruling principle in my life.  Forgive me for trying to have one foot in the world and one foot in Your Kingdom.  I know it is impossible to straddle both the world and Your Kingdom, yet I confess I attempt it.  Holy Spirit, please convict me when I set my mind on anything other than the things of my Lord and my God.

Job 4:1-2
While reading Job, I have found it important to remember two things.  First, because of the events of chapters 1 and 2, we have information Job and his three friends did not have.  They did not know of God's conversations with Satan.  Second, having read the book, we see the LORD's judgment of Eliphaz, Bildad, and Zophar.  If you don't know, it is okay to read the end (Job 42:7-8).  Knowing this won't ruin the story.  Therefore, it is wise to be observant of the counsel these three men give Job.  Observe what the three friends say; some is false but much of what they say is true, but its application is wrong.  Job is a long book.  There are many conversations between these four men.  

Romans 8:5-8
"For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit.  For to set the mind on the flesh is death, but to set the mind on the Spirit is life and peace.  For the mind that is set on the flesh is hostile to God, for it does not submit to God’s law; indeed, it cannot.  Those who are in the flesh cannot please God."

Scripture interpreting Scripture is the way to study God's Word.  After reading Jesus' rebuke of Peter, this passage in Romans sure seems to be a commentary on that discussion.  Paul's summary in verse eight is "Those in the flesh cannot please God."  What Peter did and said was not pleasing to God.  The questions for me are:  What is my mindset?  Am I living according to the flesh or according to the Spirit?  Am I faithfully submitting to God's law? 

Holy Spirit, thank You for the promise of Romans 8:9-10.  Thank You for using Paul to share the grace and mercy of our Lord and Savior.  Please strengthen me to set my mind on the eternal rather than the temporal.