Hebrews 3:13

But continually encourage one another every day, as long as it is called “Today” (and there is an opportunity), so that none of you will be hardened (into settled rebellion) by the deceitfulness of sin (its cleverness, delusive glamour, and sophistication).

Everyone needs help and encouragement from our fellow believers in Christ.  The temptations and the cares of this world can lead us off track and from the word of God.  That is why the church and our friends are there to encourage us to stay on the path.  The devil knows our weaknesses much better than we know our strengths in Jesus sometimes.