What does the Bible say about Paul's weakness?

In 2 Corinthians 4:7, Paul describes himself as having a treasure in an earthen vessel, emphasizing that his weaknesses serve to show that the power belongs to God and not to him. Despite being perceived as weak and contemptible in presence and speech, Paul's ministry exemplifies how God uses the humble and the despised to display His glory. This reflects the broader theological truth that God's strength is perfected in our weakness, reminding us that it is through our frailties that God's power is manifested to the world.