Definition and Context:
Humility, in the biblical sense, is the quality of having a modest view of one's importance. It is a virtue that is highly esteemed in the Scriptures and is often juxtaposed with pride. In the context of the Kingdom of God, humility is not only a personal virtue but a prerequisite for greatness. The Kingdom of God operates on principles that often invert worldly values, placing the humble in positions of honor.

Biblical Foundations:
The Bible consistently emphasizes humility as a key characteristic of those who are great in the Kingdom of God. Jesus Christ, the ultimate example of humility, taught and demonstrated this principle throughout His ministry.

Key Scriptures:

1. Matthew 18:1-4 : "At that time the disciples came to Jesus and asked, 'Who then is the greatest in the kingdom of heaven?' Jesus called a little child to stand among them. 'Truly I tell you,' He said, 'unless you change and become like little children, you will never enter the kingdom of heaven. Therefore, whoever humbles himself like this little child is the greatest in the kingdom of heaven.'"
· Here, Jesus uses a child as a model for humility, emphasizing that greatness in the Kingdom is not about status or power but about a humble and trusting heart.

2. Philippians 2:5-8 : "Let this mind be in you which was also in Christ Jesus: Who, existing in the form of God, did not consider equality with God something to be grasped, but emptied Himself, taking the form of a servant, being made in human likeness. And being found in appearance as a man, He humbled Himself and became obedient to death—even death on a cross."
· The Apostle Paul highlights the humility of Christ as the ultimate example for believers. Jesus' willingness to humble Himself, even to the point of death, is the model for true greatness.

3. James 4:10 : "Humble yourselves before the Lord, and He will exalt you."
· This verse underscores the divine principle that God exalts those who humble themselves. It is a promise that true exaltation comes from God, not from self-promotion.

4. 1 Peter 5:5-6 : "In the same way, you who are younger, submit yourselves to your elders. And all of you, clothe yourselves with humility toward one another, because, 'God opposes the proud but shows favor to the humble.' Humble yourselves, therefore, under God’s mighty hand, so that in due time He may exalt you."
· Peter encourages believers to adopt an attitude of humility towards one another, reinforcing the idea that God’s favor rests on the humble.

Theological Implications:
Humility is not merely an external behavior but an internal disposition that reflects one's relationship with God. It acknowledges God's sovereignty and one's dependence on Him. In the Kingdom of God, humility is the pathway to true greatness because it aligns with God's character and His purposes.

Practical Application:
Believers are called to cultivate humility by following the example of Christ, serving others selflessly, and recognizing their own limitations and need for God's grace. In doing so, they align themselves with the values of the Kingdom and position themselves to be used by God for His glory.

Conclusion:
The biblical teaching on humility and greatness in the Kingdom challenges believers to reevaluate their understanding of success and honor. It calls for a radical reorientation of values, where the last become first, and the humble are exalted by God.