“Therefore gird up the loins of your mind, be sober, and rest your hope fully upon the grace that is to be brought to you at the revelation of Jesus Christ.”
All three commands in this verse relate to attitude.
fully upon the grace
It is one thing to rest our hope on grace; it is another thing to rest our hope completely on grace. “Fully” is an idiom meaning “into end.” This is a degree of completeness, with the possible implication of purpose or result–“completely, totally, entirely, wholly.”
God wants us to hope perfectly. He wants us to develop a mature hope. He wants us to acquire a thorough hope of the grace that Jesus brings by the unveiling of Himself. Mature hope rests on grace.
This means to have a hope that is in a state of completeness. God wants us to live in hope. An individual who has this hope is complete. He does not want anything. He has complete expectation based on God’s provisions in grace.
Jesus Christ personifies grace. Titus 2:11 says,
“For the grace of God that brings salvation has appeared to all men.” All that we have before God is from the grace of Christ. It is because of Him that we have rights before God.
God wants us to rest our hope completely on grace.
God does not want us to waver in our hope. The only way our hope cannot waver is to stabilize it with grace. Grace gives our hope a strong base.
It is not enough that we receive grace at the point of our salvation. We need grace for daily living. We need grace to hope for the eternal state. We need to rest completely on grace.