Eternal security, assurance of salvation

"Eternal security means that because we have been saved on the grounds of Christ’s perfect work in dying for our sins, and according to God’s eternal purpose in our election, our salvation is sealed, or guaranteed, by the Holy Spirit dwelling within us. (Ephesians 1:13-14; John 10:27-30). We say, “Once saved, always saved.” The Bible says, “He who began a good work in you will carry it on to completion until the day of Christ Jesus” (Philippians 1:6). We must not think this means we can sin as we will and still presume to be saved men and women. If we are saved, we have a new nature that will always lead us in the way of righteousness. If we are not moving in that direction (although not perfectly in this life), we cannot have assurance that we are truly saved, regardless of what may be our profession. That is why the Bible can also say with utter consistency, “Make your calling and election sure” (2 Peter 1:10) and “He who stands firm to the end will be saved” (Matthew 10:22)." - Bsf

Peter shows how born again faith grows up into quality faith (2 Peter 1:1-11)
Give your heart to God and let your eyes delight in him (Proverbs 23:26, John 14:6)
When we fail to meet the standard, prayer is the corrective action
Holiness is freeing; evidence is a joy and peace at heart (Isaiah 35:8-10)