How do we know the elect will be saved?

The assurance of salvation for the elect comes from the biblical doctrine of election, as expressed in scriptures like Ephesians 1:4-5 and Romans 8:30, where it states that those chosen by God will be called, justified, and glorified. Mark 13:20 mentions that for the elect's sake, the Lord has shortened the days of affliction, indicating God's protective hand over His chosen ones. This assurance is not based on any merit or effort by the elect, but solely on God's sovereign grace and the completed work of Christ. The certainty of salvation is anchored in the character of God, who is faithful to His promises.