What does the Bible say about Christ laying down His life for us?

The scriptures clearly reveal that Christ's sacrifice was particular and effective, directed specifically towards His elect. In 1 John 3:16, we see that 'He laid down His life for us', pointing to a defined group, namely God’s people. This is further supported by Romans 8:31-32, where it states that 'he that spared not his own Son, but delivered him up for us all.' This underscores that His atonement was accomplished for those whom the Father gave to Him, ensuring that we can have confidence in our salvation, knowing it is not a mere offer but a certainty for His sheep.