When God says He wants it all, He means it. We need not dive deeper to find out what the Lord meant when He said all. We do this with so many passages primarily to make our flesh feel better. For example, in Matthew 19 when Jesus says “it is easier for a camel to go through the eye of a needle than a for someone who is rich to enter the kingdom of God”, he really meant it. He did not mean a small mountain pass or a small door as some suppose. The key to understanding this verse is what Jesus said later. His disciples, clearly astonished and terrified by this illustration, asked Jesus “Who then can be saved?”. Jesus then says, “With man this is impossible but with God all things are possible”. You see, the disciples still had their gaze on what they could do to enter the Kingdom of God. Jesus was affirming to them that the path to salvation is impossible for one in the flesh; as impossible as it is for a camel to go through the eye of a needle.
So then, what does it mean to give all to God? I fear this needs explanation because we dwell in a culture where preference is more valued than truth and truth at its best is looked at with the eye of relativism. To give all to God is to be wholly His. It is to literally be a possession of the Most High to do with what He wishes. This does not mean to decide with God what is best for us but to submit every choice into the judgement of His hands. For the rich man in Matthew 19 this meant that he needed to sell all his possessions and give them to the poor. The key word here is his. If the possessions were God’s than that man would no longer be rich, at least not in the worldly sense. But the possessions were not God’s as Jesus rightly discerned in the young man’s heart. When we give all to God it means we are no longer in possession of or attached to anything of this world. That doesn’t mean that we don’t own anything in the natural sense but it does mean that whatever resources God has entrusted to us must be subject to His manipulation at any time. Our goal should be to echo honestly the words of Paul in Philippians 3:8 where he said “More than that, I count all things to be loss in view of the surpassing value of knowing Christ Jesus my Lord, for whom I have suffered the loss of all things, and count them but rubbish so that I may gain Christ”.