2 Samuel 17:10
Then even the bravest soldier, whose heart is like the heart of a lion, will melt with fear, for all Israel knows that your father is a fighter and that those with him are brave.

If we are on God's side, we have a brave heart. This is because we know that He fights for us. If we are not on God's side then fear will be ruling our hearts instead of faith.

The heart of those who are not on God's side, even if they have the heart of a lion, it will melt with fear when they see God fighting for us.

What kind of heart we have, heart of a lion (brave) or the one with fear? (Psa 34:10) The lions may grow weak and hungry, but those who seek the LORD lack no good thing.

Application

Decide to seek the Lord everyday. Be bold to stand up for Jesus.