Certainty of saving faith comes from believing in Jesus Christ as the Son of God, which results in transformation.
Assurance of saving faith is rooted in recognizing and acknowledging who Jesus Christ truly is—the Son of God. John 1:12 states that to all who received Him, He gave the right to become children of God. This belief is not merely intellectual but also involves an understanding that results in love for Christ and obedience to His commandments (1 John 5:1-3). The inner transformation that accompanies this faith is evidence of God's work in one's life. When someone believes that Jesus is the Christ, they are not only recognizing His identity but also the sufficiency of His sacrifice, leading to genuine salvation, as mentioned in Romans 10:9-10.
Scripture References:
1 John 5:1-3, Romans 10:9-10
Commentary