1 Kings 19:8
8 And he arose and ate and drank, and went in the strength of that food forty days and forty nights to Horeb, the mount of God. (ESV)
All the strength supplied to us by our gracious God is meant for service, not for indulgence or pride. When the prophet Elijah found the cake baked on the coals and the jar of water placed at his head as he lay under the juniper tree, he was not being given a special treat that he could lie back and enjoy–he was being sustained so that he could fulfill his responsibilities for the next forty days and forty nights. When the Master invited the disciples to come and eat with Him, after the meal was over He said to Peter, “Feed my sheep,” then added, “Follow me.”
It is the same for us; we eat the bread of heaven so that we can expend our strength in the Master’s service. We come to the table and eat of the paschal lamb in a spirit of readiness, so that we may leave as soon as we have satisfied our hunger.
Some Christians are for living on Christ but are not so anxious to live for Christ. Earth should be a preparation for heaven; and heaven is the place where saints feast most and work most. They sit down at the table of our Lord, and they serve Him day and night in His temple. They eat of heavenly food and offer perfect service.
Believer, in the strength you daily gain from Christ, work for Him. Some of us have a lot to learn concerning the design of our Lord in giving us His grace. We are not to hide the precious grains of truth without giving that truth an opportunity to grow: We must sow it and water it. Why does the Lord send the rain upon the thirsty earth and give the sunshine? Is it not in order that sun and rain may help the fruits of the earth to yield food for us? Even so the Lord feeds and refreshes our souls so that we may use our renewed strength in the promotion of His glory.