To serve a mighty God with all strength means to give Him your full devotion—your energy, focus, will, and life—not half-heartedly or casually. It's about loving and obeying God with everything you have: your actions, your decisions, your endurance, and your priorities. In practical terms, it means you don't reserve parts of your life for yourself alone, but actively seek to align all you do, be it work, relationships, or choices, with His will. It calls for total commitment, wholehearted obedience, and living with the awareness that your strength is best used in faithful service to Him. As believers, such devotion and zeal in service and love are possible, for God is mighty, all-powerful and glorious! In His might, we overcome. In His strength, we endure. In His glory, we are more than conquerors. He has unlimited power, authority, and ability—nothing is too difficult for Him. He is stronger than any force in creation. He can create, sustain, rescue, judge, heal, and rule over all things without limitation or weakness. God is fully able to accomplish everything He wills, and no power can resist Him or surpass Him.
