Matthew 5:3 Blessed are the poor in spirit: for theirs is the kingdom of heaven.
I believe it means those who have a humble disposition.
Proverbs 16:19 Better it is to be of an humble spirit with the lowly, than to divide the spoil with the proud.
Proverbs 29:23 A man’s pride shall bring him low: but honour shall uphold the humble in spirit.
Ecclesiastes 7:8 Better is the end of a thing than the beginning thereof: and the patient in spirit is better than the proud in spirit.
Isaiah 57:15 For thus saith the high and lofty One that inhabiteth eternity, whose name is Holy; I dwell in the high and holy place, with him also that is of a contrite and humble spirit, to revive the spirit of the humble, and to revive the heart of the contrite ones.
Matthew 18:4 Whosoever therefore shall humble himself as this little child, the same is greatest in the kingdom of heaven.
Matthew 23:12 And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted.
James 4:6 But he giveth more grace. Wherefore he saith, God resisteth the proud, but giveth grace unto the humble.
James 4:10 Humble yourselves in the sight of the Lord, and he shall lift you up.
1 Peter 5:5 Likewise, ye younger, submit yourselves unto the elder. Yea, all of you be subject one to another, and be clothed with humility: for God resisteth the proud, and giveth grace to the humble.
1 Peter 5:6 Humble yourselves therefore under the mighty hand of God, that he may exalt you in due time:
I hope this helps