Is there scripture stating we will realize an unmistakable event or experience immediately upon salvation during God's Ephesians 3:2 "age of grace"?

If there are unmistakable events or experiences that prove "true" salvation, how would we then be able to discern a deceptive event or experience that was administered by Satan? Isn't this why faith is required instead of visible proof? I believe it protects us from the power of Satan, "the god of this world" and master of deception, along with his false "ministers of righteousness". **2 Corinthians 4:3-4** >But if our gospel be hid, it is hid to them that are lost: 4 In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them. **2 Corinthians 11:13-15** >For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ. 14 And no marvel; for Satan himself is transformed into an angel of light. 15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works. Please provide actual scripture from our apostle Paul's epistles (Romans through Philemon) that states where we will experience an immediate event or experience that would confirm our eternal salvation aside from having faith alone in Jesus Christ and the work that He completed on the cross on our behalf.