All Christians should be As Missionaries in Old Age
Source: TTT
Deuteronomy 32:7
Remember the days of old; consider the years long past. Ask your father, and he will tell you, your elders, and they will inform you.
Psalm 71:18
Even when I am old and gray, do not forsake me, O God, until I proclaim Your power to the next generation, Your might to all who are to come.