Paul and David give insights as to how well are you giving

Paul suggests that we are to examine and test ourselves.

Examine yourselves to see whether you are living in the faith. Test yourselves. Do you not realise that Jesus Christ is in you?—unless, indeed, you fail to meet the test! - 2 Corinthians 13:5

 David prayed that God would search his heart and try him, then show him anything he needed to repent of and change.

 Search me, O God, and know my heart;
    test me and know my thoughts. See if there is any wicked^[a] way in me,
    and lead me in the way everlasting. - Psalm 139:23-24