Why do Christians need to pray for strength?

Psalm 68:28 calls on God to 'command thy strength,' expressing our need for divine power in every aspect of our lives. When we pray for strength, we acknowledge our inability to fulfill God's commands on our own and our reliance on Him to empower us for the tasks of faith, service, and overcoming sin. This dependence fosters humility and fosters an honest acknowledgment that true strength comes from God alone, exemplifying the believer's relationship with the Father in reliance and prayer.