1 Thessalonians 5:8-9

But let us who are of the day be sober, putting on the breastplate of faith and love, and as a helmet the hope of salvation.  For God did not appoint us to wrath, but to obtain salvation through our Lord Jesus Christ.

God wants us to keep our guard up in Him, so we don’t become downtrodden in the fight.  It is always harder to show love and be a kind example if we are tired from the battle.  The best example is a good example, and we win people to salvation through kindness and love.  Faith and love strengthen our hearts so we can move the hearts of the lost.