Abraham was a small guy. He is contrasted with Nimrod, who was a “mighty man.” He was from a small family, a genetic cul-de-sac, really. In the list of families in Genesis 11.10-26 everyone “had other sons and daughters,” except Terah. He only had three sons, one died, and Sarai was barren. Small, unexceptional, unimpressive. God chose Abraham.
Rahab was a prostitute living in the city wall, right on the margins of society, shameful, vulnerable, disreputable. God chose Rahab.
David was the eighth son of Jesse. Where seven sons were the complete complement, a perfect family, David was the eighth, the superfluous, the overlooked, in the fields with the sheep. Not named. Not invited. God chose David.Peter was a fisherman from a small village, not formally educated, quick to deny Jesus. Yet he ended up leading the world-wide Christian movement! God chose Peter.
St Patrick was kidnapped and enslaved. As a slave, a shepherd, a teenager, God got hold of him and shaped him into an apostle to Ireland. God chose Patrick.
When Hudson Taylor was asked why God would use him in China, he replied, “I believe that God was looking for someone small enough to use, and he found me.” God chose Hudson Taylor.
Even the Lord Jesus did not come into the world as a big man, but as a baby, as a shepherd, as a slave, as a refugee, overlooked, scorned, discounted.
Feeling small? Insignificant? Ill-equipped? Overlooked? Superfluous? God, who chooses the foolish to shame the wise, the weak to shame the strong, and the small to shame the great, has chosen you!
Does size matter for Christians? Yes it does, actually. The smaller the better.