It is better to be humble in spirit with the lowly Than to divide the spoil with the proud. – Proverbs 16:19 NASB

All the ways of a man are pure in his own eyes, but the Lord weighs the spirits (the thoughts and intents of the heart). – Proverbs 16:2 AMP

The spirit of man [that factor in human personality which proceeds immediately from God] is the lamp of the Lord, searching all his innermost parts. – Proverbs 20:27 AMP

The natural person does not accept the things of the Spirit of God, for they are folly to him, and he is not able to understand them because they are spiritually discerned. – 1 Corinthians 2:14 ESV

But the person who is united to the Lord becomes one spirit with Him. – 1 Corinthians 6:17 AMP

O Lord, by these things men live, and in all these is the life of my spirit. Oh restore me to health and make me live! – Isaiah 38:16 ESV

Restore to me the joy of your salvation, and uphold me with a willing spirit. – Psalm 51:12 ESV