The hope of the gospel is that God has brought salvation to sinners. So when sickness comes, rejoice because God has promised salvation and glorified bodies. When you are frustrated with the struggle over sin, rejoice that God will one day totally defeat sin and death. When the brokenness of this world seems overwhelming, rejoice that God is overcoming this world and establishing His eternal kingdom. God has provided salvation, God is providing salvation, and God will save the elect. Rejoice in the salvation of God.