Because without humility, without us choosing of our own free will to voluntarily submit to God’s will, He cannot do the work He wants to do in us. There are so many verses about humility in the Bible because it is a crucial factor in us being conformed to the image of the Son. (Romans 8:29.) This is, of course, the goal of a true disciple, and for that to happen, we are utterly dependent on help and grace from God. And how do we get that help and grace?
“But He gives more grace. Therefore, He says: "God resists the proud, but gives grace to the humble." (James 4:6.)
“The humble He guides in justice, and the humble He teaches His way.” (Psalm 25:9.)
“Then he said to me, ‘Do not fear, Daniel, for from the first day that you set your heart to understand, and to humble yourself before your God, your words were heard; and I have come because of your words." Daniel 10:12.
“And He said to me, “My grace is sufficient for you, for My strength is made perfect in weakness.” (2 Corinthians 12:9.)