Why do many Christians struggle with assurance of salvation?

The struggle for assurance among believers often arises from an inward focus—looking to personal performance rather than Christ’s sufficiency. The speaker notes that 'a lack of assurance always points to self-trust, not faith and trust in Christ.' When believers examine their feelings or actions rather than the promises of God, doubt can creep in. The biblical encouragement is to fix our eyes upon Jesus, the 'author and finisher of our faith' (Hebrews 12:2), which redirects our perspective from our failings to His perfect work, fostering true assurance.