"Let no man despise thy youth; but be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity" 1 Tim 4:12

Samuel in word (1Samuel 3:19)
David in conversation (1Samuel 18:30)
Mordecai in charity (Esther 10:3)
Caleb in spirit (Numbers 14:24)
Abraham in faith (Genesis 15:6)
Daniel in purity (Daniel 1:8)