Samuel Logan Brengle emphasizes that God offers a perfect salvation that empowers believers to overcome worldly challenges and live in accordance with His will. He identifies several hindrances to receiving this salvation, including ignorance of its existence, unbelief in God's promises, and the pursuit of the wrong expectations regarding salvation. Brengle encourages believers to seek a deeper understanding of holiness, which is not merely about external conduct but involves a transformation of the heart and character. He concludes that true holiness is attainable through humility and a close relationship with Jesus, who exemplifies the perfect model of a holy life.