As God called Moses to serve as a mediator pointing forward to the coming Christ, he also calls us after Christ’s finished work on earth to reflect his glory and love on the earth. When we are united to Christ by true faith, we are not just saved from our sins, but we are also brought into his work and his calling as prophets, priests, and kings. Paul urges Christians to keep in step with the Spirit and to live a life worthy of the calling we have received (Ephesians 4:1). As Christians seek to shine in this dark world we find that our faith and submission to God will always lead us to action, which can often have uncomfortable results. Whether we are called to serve in other countries or in our own neighbourhoods, called to serve the kingdom in quiet anonymity or publicly, God’s command to serve in his kingdom presses upon us, just as it pressed upon Moses.

That is why this passage strikes a chord in our own hearts. It exposes both our low expectations of God’s power and the pride that often resides in our hearts, which often hinder our prompt obedience to the Lord’s calling in our lives. We use our weaknesses as an excuse for not serving, because we don’t believe that God can accomplish his purposes in a different way than what we would expect him to do. Our text shows us how often we fail to recognize that the God who calls to serve him even in our weakened state is the same God who makes a person strong or weak, seeing or blind, and healthy or sick. He knew very well who we were when he called us to glorify him in our different callings. If he wanted someone different to do what he called you for, he would have put someone different there, or at least given you the abilities of such a person. You (specifically you) are where you were because in his wisdom, God decided that he wanted you to fulfil that task.