Exodus 3:10-15 (NIV) 10 So now, go. I am sending you to Pharaoh to bring my people the Israelites out of Egypt.11 But Moses said to God, "Who am I that I should go to Pharaoh and bring the Israelites out of Egypt?"12 And God said, "I will be with you. And this will be the sign to you that it is I who have sent you: When you have brought the people out of Egypt, you will worship God on this mountain."13 Moses said to God, "Suppose I go to the Israelites and say to them, ‘The God of your fathers has sent me to you,’ and they ask me, 'What is his name?' Then what shall I tell them?"14 God said to Moses, "I AM WHO I AM. This is what you are to say to the Israelites: 'I AM has sent me to you.'"15 God also said to Moses, "Say to the Israelites, ‘The LORD, the God of your fathers—the God of Abraham, the God of Isaac and the God of Jacob—has sent me to you.’ This is my name forever, the name you shall call me from generation to generation.

Isaiah 6:8 (NIV) 8 Then I heard the voice of the Lord saying, “Whom shall I send? And who will go for us?” And I said, "Here am I. Send me!"

Isaiah 61:1-3 (NIV) 1 The Spirit of the Sovereign LORD is on me, because the LORD has anointed me to proclaim good news to the poor. He has sent me to bind up the brokenhearted, to proclaim freedom for the captives and release from darkness for the prisoners,2 to proclaim the year of the LORD’s favor and the day of vengeance of our God, to comfort all who mourn,3 and provide for those who grieve in Zion—to bestow on them a crown of beauty instead of ashes, the oil of joy instead of mourning, and a garment of praise instead of a spirit of despair. They will be called oaks of righteousness, a planting of the LORD for the display of his splendor.

John 20:21 (NIV) 21 Again Jesus said, “Peace be with you! As the Father has sent me, I am sending you.”