How do we know that salvation is secure according to the Bible?

The assurance of salvation is rooted in the character of God and His promises. Philippians 1:6 states, 'He who began a good work in you will carry it on to completion until the day of Christ Jesus.' This assurance indicates that our salvation is not dependent on our own efforts, but solely on God's faithfulness and power. Throughout Scripture, we see that God is truly the initiator and sustainer of our faith. For instance, Luke's parables in Luke 15 underline God's active pursuit and saving work among those who are lost, showcasing that His divine will and grace ultimately accomplishes our redemption and perseverance in faith.