In Hebrews chapter 3 it says, '12 See to it, brothers, that none of you has a sinful, unbelieving heart that turns away from the living God. 13 But encourage one another daily,as long as it is called Today, so that none of you may be hardened by sin's deceitfulness.' Everyday the Devil, working with the distractions of the world and the lusts of the flesh, is attempting to lure us away from God's path (just like he has been doing throughout history since Eden).
We have a critical role to play in this drama and that is the role of the encourager in another person's life. There is someone you know today that is being crushed by lies about their worth and identity that needs a timely word of truth in love from you. There is someone today that is allowing their heart to be enticed by sinful pleasures and desires that just needs a word from you that reminds them of who they are and that there is no real life outside of our Heavenly Father (just like the prodigal son discovered).
I love the word 'Today' in this verse. Today is the day to encourage for tomorrow may be too late. In Proverbs 3 it says, '27 Do not withhold good from those who deserve it, when it is in your power to act. 28 Do not say to your neighbor, "Come back later; I'll give it tomorrow"-- when you now have it with you.' So if the Lord puts someone on your heart today then don't delay but give them that encouragement!