Predestination can be scary if we don't put our total faith in God. He has a plan and purpose for each of us and unless we are willing to accept this, we will be scared. The good part about predestination is that the comfort of knowing our Heavenly Father has taken each of us and proposed a special plan and purpose for our lives so that we will lead meaningful and complete lives for Christ. Paul brings up the subject of predestination to show how loving our God is to give these gifts to each Christian. Paul is prasing God for it because he wants them to know that God is providing for us always in ways we are not aware of yet. He wants us to know taht God is bleswsing us with every spiritual blessing available to us.