1. One mark of growth in grace, is increased HUMILITY. The man whose soul is growing, feels his own sinfulness and unworthiness more every year.

He is ready to say with Peter, "I am a sinful man, O Lord!" The nearer he draws to God, and the more he sees of God's holiness and perfections — the more thoroughly is he sensible of his own countless sins and imperfections. The further he journeys in the way to Heaven — the more he understands what Paul meant when he says,

"I am not already perfect!" "I am not fit to be called an apostle!" "I am less than the least of all saints!" "I am the chief of sinners!"

Scripture

Luke 5

8 When Simon Peter saw it, he fell down at Jesus’ knees, saying, “Depart from me, for I am a sinful man, O Lord!” -nkjv

Philippians 3

12 Not that I have already attained, or am already perfected; but I press on, that I may lay hold of that for which Christ Jesus has also laid hold of me. -nkjv

1 Corinthians 15

9 For I am the least of the apostles, who am not worthy to be called an apostle, because I persecuted the church of God. -nkjv

Ephesians 3

8 To me, who am less than the least of all the saints, this grace was given, that I should preach among the Gentiles the unsearchable riches of Christ, -njkv

1 Timothy 1

15 This is a faithful saying and worthy of all acceptance, that Christ Jesus came into the world to save sinners, of whom I am chief.  -nkjv

source: www.jcryle.info