People are encouraged when they read "with long life I will satisfy him and let him see My salvation" (Ps 91:16). It's also okay to ask because "he will call on me and I will answer him" (:15). "Even to your old age I will be the same . . . I will carry you" (Isa 46:4). How does this happen? "To see good days . . . [you] must turn away from evil and do good" (1Pe 3:11). "Wisdom is with aged men, with long life is understanding. With him are wisdom and might; to Him belong counsel and understanding " (Job 12:12-13). "The fear of the Lord prolongs life" (Pr 10:27). If you walk in My ways, keeping My commandments . . . then I will prolong your days" (1Ki3:14).
"You shall walk in all the way which the Lord your God has commanded you . . . that you may prolong your days in the land" (Dt 5:33). "Keep all His statutes and His commandments which I command you, all the days of your life, and that your days may be prolonged" (6:2). "Let your heart keep my commandments; for length of days and years of life and peace they will add to you" (Pr 3:1-2). "The fear of the Lord is the beginning of wisdom. For by me your days will be multiplied, and years of life will be added to you" (9:10-11).