God is the ultimate authority on life and death, and is the one who creates and controls the universe according to His will. He is the First and the Last, the Outward and the Inward, and has knowledge of all things. God has given us our talents and qualities, and can take them away at any time. He is capable of extraordinary feats, and can even make the impossible possible.
We should remember His immense power and thank Him for His blessings, and come to know Him better by obeying His commands. Ultimately, Wills are in the hands of God.