"All that the Father gives Me will come to Me, and the one who comes to Me I will certainly not cast out.John 6:37(NASB)
Physical hunger requires food for the body, but spiritual hunger requires spiritual food for the soul and Christ had just announced that He is the Bread of Life, the spiritual food that came down from heaven. Jesus had just made the first of many earth-shattering 'I AM' statements that announced His Messianic authority and proclaimed His eternal deity. He expands this truth by announcing, "All those that the Father gives Me will come to Me, and the one who comes to Me I will certainly not cast out."
The recent feeding of the 5000 with a few loaves and fishes was insufficient evidence of His Messianic claims for this unbelieving crowd, who considered this a minor miracle in comparison with the 40 years of heavenly manna that Moses provided for Israel: "Show us a better miracle and we will believe," was the insincere cry of the unbelieving majority - then, as it is today.
But the hypocritical attitude of the unbelieving heart is not receptive to the truth of God's Word and Christ knew then even if one rose from the dead - the unbelieving masses would still not believe. But the Lord Jesus was not discouraged by Israel’s unbelief, for He knew that the plans of God would certainly be fulfilled.
God knows the end from the beginning and in His omniscience, God knows all who will one day exercise their God-given free-will and choose to believe on the only begotten Son of God for the salvation of their soul, the forgiveness of sins, and life everlasting. And in these few simple, yet profound words, Jesus declares that man's salvation is dependent on two things: 1) divine sovereignty AND 2) human responsibility, for we are told: 1) "All those that the Father gives Me will come to Me," AND 2) "The one who comes to Me I will certainly not cast out."
The Father gives to the Son all those who have demonstrated faith in the death, burial, and Resurrection of Christ. The Father gives to the Son all who choose to place their trust in Jesus Christ for the forgiveness of sin and life everlasting. Although no-one would come to salvation except the Spirit draws them, ALL who choose to believe in Christ, when convicted by the Holy Spirit of sin, righteousness, and judgement, become part of that Body of believers that are given by the Father to the Son.
The whole company of believers who trust in Christ for salvation becomes a sovereign love-gift from God the Father to God the Son - through time and into eternity - and we are given God's supreme assurance that all who come by grace through faith in Christ, will be given to Him by the Father and none shall pluck them out of His hands - and this is God's sovereign will.
But Christ adds that every single person who trusts in Him for salvation will be accepted, and none will be cast away. Salvation has been made available to all who exercise their free-will and come to Christ for God's free gift of salvation. Everyone who comes to Christ is given the assurance that: "The one who comes to Me (by grace though faith) I will certainly not cast out." But it is man's free will choice to do so.
God does not choose to save some and damn others - that is a damnable lie. All are given the same offer of salvation. Those who are saved are simply those who have chosen to believe God's Word and by faith have trusted Christ as Saviour, while those who perish are simply those who have chosen to reject God's free gift of grace. But ALL that the Father gives to Christ will come to Him, and not one who comes to Jesus for salvation will be cast away.
Heavenly Father, thank You that in Your mercy and grace, You sent Jesus to be the propitiation for our sins and that all who come to Him by faith will not be cast out. Thank You for this free gift of Your grace. Help me to share the good news with others who are dead in their sins and heading for eternal separation from You. This I ask in Jesus' name, AMEN.