Read John 20-Acts 1
But these are written so that you may continue to believe that Jesus is the Messiah, the Son of God, and that by believing in him you will have life by the power of his name. (John 20:31 NLT)
This verse re-emphasizes the importance of knowing Scripture...so that you and I may continue to believe! That we would believe Jesus is who He says He is-the Son of God. To believe that Jesus will do what He said He would do--give us eternal life by believing in His life, death & resurrection.
If you are having trouble believing today, re-visit the life of Jesus in Scripture. It was written to increase your faith!