Moses was keeping the flock of his father-in-law Jethro, the priest of Midian; he led his flock beyond the wilderness, and came to Horeb, the mountain of God. There the angel of the Lord appeared to him in a flame of fire out of a bush; he looked, and the bush was blazing, yet it was not consumed. Then Moses said, ‘I must turn aside and look at this great sight, and see why the bush is not burned up.’ When the Lord saw that he had turned aside to see, God called to him out of the bush, ‘Moses, Moses!’ And he said, ‘Here I am.’ Then he said, ‘Come no closer! Remove the sandals from your feet, for the place on which you are standing is holy ground.’ He said further, ‘I am the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob.’ And Moses hid his face, for he was afraid to look at God.

Then the Lord said, ‘I have observed the misery of my people who are in Egypt; I have heard their cry on account of their taskmasters. Indeed, I know their sufferings, and I have come down to deliver them from the Egyptians, and to bring them up out of that land to a good and broad land, a land flowing with milk and honey, to the country of the Canaanites, the Hittites, the Amorites, the Perizzites, the Hivites, and the Jebusites. The cry of the Israelites has now come to me; I have also seen how the Egyptians oppress them. So come, I will send you to Pharaoh to bring my people, the Israelites, out of Egypt.’ But Moses said to God, ‘Who am I that I should go to Pharaoh, and bring the Israelites out of Egypt?’ He said, ‘I will be with you; and this shall be the sign for you that it is I who sent you: when you have brought the people out of Egypt, you shall worship God on this mountain.’
 

God assigned to Moses the remarkably overwhelming task of leading the Israelites out of slavery in Egypt to another land.  Who would not feel frightened, inadequate and stunned at such a demand?  Moses predictably looks at his own self, finds himself lacking, and asks God what He sees in him that he should be chosen.  God tells Moses all he needs to hear: "I will be with you."  He also tells him that the sign God will give him that it was He who sent him will not come until the people are freed and led through the desert to the very mountain on which he is standing.  That's a long time to wait for a sign, especially given the difficulty and continued apparent failure of Moses to fulfill the work assigned to him.

When we are at our station in life, when we are laboring each day at our assignment (see Sirach 33.10-13) we may feel ourselves overwhelmed, or under whelmed, or in deep darkness, adrift in life.  We ask, like Moses, "Who am I, Lord, that you want me here, doing this?"  Yet so it is.  "I am with you," says God.  Jesus told the same thing to the disciples right after he told them to go into the whole world and make disciples of all nations: "Remember, I am with you." (Matthew 28.19-20)

Neither the Father nor the Son comfort us in our daily walk in life by telling us of our abilities or assuring us of our capabilities.  They send us forth and tell us "I am with you."  That is more than we need to fulfill well what we must do.  But we must continually recall Jesus' final word in order to keep this faith - "Remember."  It is easy to become discouraged as we plod along through our days, thinking that nothing is changing, that our efforts, like Moses, are counting for nothing.  Does God leave us alone in all this?  He does not.  He gives us help.  He tells us - remember.  I am with you.  But unless we set aside frequent time for prayer, especially time with the scriptures and the stories therein, we will not receive God's antidote.  Instead, what will happen will be the worst thing for us: we will forget.  We will start believing we are alone.