How do we know that all who come to Christ will not be cast out?

In John 6:37, Jesus asserts, 'All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.' This is a profound declaration of the security of believers in Christ. It underscores that those whom the Father has chosen and drawn to Christ will inevitably come to Him, and He ensures that none of them will be lost. This assurance emphasizes the sovereign grace of God in salvation, reinforcing the doctrine of eternal security for those truly redeemed.