Prevailing with God

Do all of God's children wrestle with Him at one time or another? Why did Jacob pray that the LORD would reveal His name to him? What was the reason God made Jacob lame? Why was Paul afflicted with the 'thorn in the flesh'? How do we see pride at the heart of Paul's sin? Why does the LORD bring His own low? How did the children of Israel make an idol out of Jacob's affliction?