How do we know that God chose some people for salvation?

In the realm of sovereign grace, it is affirmed that God's election is not arbitrary but is based on His grace and purpose. Romans 8:29-30 clearly outlines this process, explaining that those whom He foreknew, He also predestined to be conformed to the image of His Son. Election is a testament to God's sovereign will in choosing some sinners to receive His grace, irrespective of their actions or merits. This doctrine underscores the glorious fact that salvation is ultimately God's work, resulting in a believer's ultimate redemption.