David Wilkerson emphasizes that God often proves man through trials and tests, suggesting that our current struggles may be part of God's plan to reveal what is truly in our hearts. He references biblical examples, such as Abraham and the Israelites, to illustrate that God allows periods of testing to strengthen our faith and character. Wilkerson reassures that even in moments of feeling forsaken, God is present and desires our devotion regardless of the outcome of our trials. He encourages believers to take up their cross and continue in faith, knowing that Jesus understands our struggles and is there to support us.