"I am your shield, your very great reward.
Often on this journey, when we become weary and discouraged, we try to encourage ourselves by looking towards the rewards that we will receive for our toils here on earth. This is a good thing as the bible teaches us to lay up for ourselves "treasures in heaven", and to "set our minds on things above." So yes we should look forward to receiving our reward for our work here for Jesus, and we should think about our reward as a motivation to keep on living for the Lord.
In the book of Revelation 4:10, we are given a glimpse of a scene in heaven, where four and twenty elders who have received their reward of crowns of glory from the Lord, are pictured as casting down their crowns before the Lord and proclaiming that God alone is worthy. Could it be that there is a greater reward than the reward that they received?
When God called Abraham to go into a land that He knew not, God promised to give him many things. God promised Abraham many blessings, but above all God Himself promised to be Abraham's reward. God as a reward is much greater than anything we can receive from Him. That is to say we should not look to God just as the rewarder, which He is, but as the reward Himself. We should seek God Himself, and not just His hand.
Again in Revelation 21:3 we read
"And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God."
Oh that we would look to God as our "exceeding great reward" and may it cause us to live for Him by the power of His Holy Spirit, till the day He receives us unto Himself.