"Saul replied, "But I'm only from Benjamin, the smallest tribe in Israel, and my family is the least important of all the families of that tribe! Why are you talking like this to me?" (1 Samuel 9:21).
I remember when I was first asked to submit my resume' to a church to be their senior pastor. I had a similar conversation with God as did Saul with Samuel. I told God how unqualified I was, how inexperienced I was. I felt this way, in part, because I saw how BIG the responsibility was. I came into direct contact with insecurities I didn't realize were even there. I began to realize, that even at 29 years of age at the time, I had never done anything to qualify myself for any opportunity God had ever called me to. He has always been my qualifier. Why was now any different? It wasn't.
When God has a word of promise for our lives, it often contradicts how we see ourselves or even think about ourselves. Saul reminds Samuel that he's the least of the least. God doesn't always use the people who are most likely expected. He likes to use the least of the least. This way, the glory is more guaranteed to belong to Him alone. We are less likely to take the credit for ourselves.
For me, it has been so easy at times to feel like this. To wonder why or how God could ever use me in the ways that He has. It's amazing to see what God can do with what He already knows. He knows my inexperience. He knows my failures. He knows my fears. As a matter of fact, He's already taken all of those irrelevant factors into consideration BEFORE He ever called me!
What we need to do, however, is to stay humble before Him, and to know that it IS by His Spirit and His strength. Be need to be confident that He has chosen you, in spite of your lack of pedigree, but because of the purpose that HE breathed into your life. You are made in His image. You were created by His design for a destiny that surpasses your insecurities. Trust in Him. Allow Him to show you what He can do IN you, THROUGH you, and IN SPITE OF you.