Why is it important for Christians to understand their life is like a shadow?

Recognizing that life is fleeting and akin to a shadow serves as a crucial motivation for Christians to redeem their time. As Psalm 102:11 states, 'My days are like a shadow that declineth,' the certainty of life’s brevity calls believers to actively pursue eternal matters and to strive for spiritual growth. This understanding can instill a sense of urgency to seek God's kingdom and righteousness (Matthew 6:33) and to utilize every opportunity for the benefit of their souls and the advancement of the Gospel. Furthermore, it encourages a careful consideration of priorities, as time is limited and should be spent wisely.