Mark 10:31 in the King James Version of the Bible reads, "But many that are first shall be last; and the last first." This verse is part of a passage in which Jesus is teaching his disciples about the nature of the kingdom of God and what it means to follow him. In this particular verse, Jesus is speaking to his disciples about the rewards and blessings that await those who have given up everything to follow him.

The phrase "many that are first shall be last; and the last first" is a well-known and oft-quoted part of Jesus' teachings. It is a powerful and provocative statement that challenges our ideas of success, status, and reward. This verse highlights the upside-down nature of the kingdom of God, where the values and priorities of the world are turned on their head.

One of the key themes of this verse is the idea of reversal. Jesus is overturning the world's standards of greatness and success. He is reminding his disciples that the things that are highly valued in the world – wealth, power, and status – are not necessarily the traits that make someone great in the eyes of God. In fact, Jesus often taught that the humble, the lowly, and the marginalized are the ones who are truly blessed and exalted in God's kingdom.

This verse also speaks to the idea of God's economy, which operates on different principles than the world's economy. In God’s economy, the last are first, and the first are last. This challenges us to reevaluate our own priorities and values and to consider what truly matters in the eyes of God.

The context of this verse is important for understanding its significance. In the preceding verses, Jesus has just had a conversation with a rich young ruler who asked him how to inherit eternal life. After telling the young man to sell his possessions and give to the poor, Jesus tells his disciples that it is difficult for the rich to enter the kingdom of God. This prompts Peter to ask what their reward will be, since they have left everything to follow Jesus. Jesus responds by assuring them that those who have sacrificed for the sake of the kingdom will be rewarded, but that the rewards will be unexpected and contrary to the world's standards.

This verse also has deep roots in the Old Testament, where similar themes of reversal and God's justice are explored. In the book of Isaiah, for example, we see numerous passages that speak of God lifting up the lowly and humbling the proud. In Psalm 37, we read, "But the meek shall inherit the earth; and shall delight themselves in the abundance of peace." These passages echo the sentiment expressed in Mark 10:31 and reinforce the idea that God's kingdom operates on different principles than the world's.

The symbolism in this verse is rich and powerful. The imagery of the first being last and the last first is evocative and thought-provoking. It challenges us to think deeply about our own attitudes towards success, status, and reward, and to consider whether we are aligning our priorities with the values of the kingdom of God. This verse also invites us to reflect on our own place in the world and to consider how we might be called to live in a way that is countercultural and aligned with God's values.

In conclusion, Mark 10:31 is a verse that is full of meaning and significance. It challenges us to reevaluate our priorities and values, and it invites us to consider what it means to be great in the eyes of God. Its themes of reversal, God's economy, and the upside-down nature of the kingdom of God are powerful and thought-provoking, and its rich symbolism invites us to reflect deeply on our own lives and choices.