Why is the concept of God being Almighty vital for believers?

The concept of God being Almighty is vital as it forms the foundation of a believer's faith and hope. David asserts in Psalm 115:3, 'Our God is in the heavens; He does whatever He pleases,' highlighting His omnipotence. This characteristic means that God is not only capable of saving His elect but also sustains them in all their trials. Knowing that God holds all power ensures believers that nothing is outside His control and that He works everything according to His purpose, providing comfort and security in turbulent times.