Why does Jesus say He will not cast anyone out?

In John 6:37, Jesus states, 'Him that cometh to me I will in no wise cast out.' This assurance reveals the nature of Christ's acceptance and the security of salvation for those whom the Father has given Him. It highlights the profound truth that the initiative in salvation is entirely God's, from election to redemption. Consequently, once a person is drawn to Christ and genuinely comes to Him, they can rest in the certainty that Christ will never forsake them. Jesus' promise not to cast out ensures believers that their salvation is eternally secure, which draws from the depths of God’s sovereign grace.