"God is Love" (1 Jn 4:16). Accordingly, He wants to give people the best, the greatest. Therefore, He raises up great people to do great things. God calls us to greatness because He is Love.
We will be great and our nation will be great if we: observe God's law carefully (Dt 4:6-8; Mt 5:19), teach God's commands (Mt 5:19), and serve people (Mt 20:26).
This obeying, teaching, and serving is so demanding that, like Jesus, we give our lives for others (Mt 20:28). Greatness means not self-realization but self-dying. Greatness is not being like Pontius Pilate, Herod, the Pharisees, or Jesus' executioners but being like Jesus on the cross. The road to greatness is the way of the cross.
Do you want to be great by Jesus' standards? Even if you don't, will you be great anyway for love of God and His people? Choose greatness. Choose obedience, teaching, serving, dying, and loving. Be great for Love (1 Jn 4:16).