After Christ ascended, He gave us the biggest gift – the Spirit!1. Know about the grand event, and celebrate. (v.1-4)2. Learn about the power, and be amazed. (v.5-12)3. Understand Peter's explanation, and call on God. (v.14-21)How does this apply to us?What do you know about the power of the Spirit? Ezekiel 37:9-14Who may call on the name of the Lord? Romans 10:9-13Who says not to harden your heart? Hebrews 3:7-12