How do we know God can use weak people for His purpose?

1 Corinthians 1:26-27 outlines this truth: 'For ye see your calling, brethren, how that not many wise men after the flesh, not many mighty, not many noble, are called: But God hath chosen the foolish things of the world to confound the wise.' This emphasizes that God's choice to use the weak and despised demonstrates His power and grace. God intentionally uses those who are seen as 'nobodies' to manifest His glory, ensuring that no flesh can boast in His presence (1 Corinthians 1:29). This divine selection is rooted in the Gospel's nature, where salvation is offered not based on human merit but on God's grace.