What does the Bible say about worldly confidence?

In James 4:13-16, we see a clear warning against the arrogance of planning for the future without considering God's sovereignty. The speaker criticizes those who declare plans based on their own confidence, highlighting that our lives are not in our own control. Proverbs 27:1 encourages humility, stating that we should not boast about tomorrow, as our knowledge of the future is limited. This attitude is rooted in the sin of presumption, where one acts as if they are the master of their own life, overlooking the frailty of human existence and the omnipotence of God.