Though we know little about Mary, we know she too came through this door. Why was she picked to give birth to the Savior? Because she already knew how much she needed God as her savior and she was already in a humble state before him, deeply appreciating her need for his mercy. (See her song in Luke 1:46-55)
Without a doubt Paul came through this door. It took a jolt on the road to Damascus and three days of blindness and fear, but he finally came to see his poverty of spirit as clearly as any man ever saw it. "I know that nothing good lives in me, that is, in my sinful nature," he wrote openly in the midst of his greatest theological treatise (Romans 7:18). "I am the least of the apostles and do not even deserve to be called an apostle.... But by the grace of God I am what I am," he told one of the churches he had planted (1 Corinthians 15:9-10). He never got too mature to talk like this. He continued to confess his poverty of spirit to the very end (1 Timothy 1:12-15; 2 Timothy 1:8-12).
LEADERS TAKE NOTE.
Source of info: First . . . the Kingdom Edited by Thomas and Shelia Jones