Look back on your life and see what God has brought you through. It will be more times than you will ever be able to recall. Just to see how He has had His hand on our lives is encouragement for today and tomorrow. David could face a giant because God had already helped him to face a lion and a bear. The God who was with us yesterday is with us today. There is nothing too big for Him.
“Have I not commanded you? Be strong and courageous! Do not tremble or be dismayed, for the LORD your God is with you wherever you go.” Joshua 1:9 (NASB)