What does the Bible say about the actions of one man in salvation?

In Scripture, particularly in the example of David's mighty men, we see that significant actions often point to the ultimate act of redemption by one man, Jesus Christ. Just as David's men risked their lives for their king, Christ singularly accomplished our salvation by His one act on the cross. Scriptures like Hebrews 1:3 state that He purged our sins by Himself, underscoring that our salvation is solely through Him and not through our efforts. Therefore, every believer recognizes that their salvation is rooted in the work of one divine Savior.