"What can we say about such wonderful things as these? If God is for us, who can ever be against us?" Romans 8:31
Our security is based on God's unshakable love for us, The love God has for us is not just an emotion, but an actual fact. God proved His love willingly sending His Son to suffer and die for us. So why would He hold back on any lesser gift? In fact, there is nothing in the whole universe that can seperate us from God's love. What more could God say to us to make us more secure in His love?