Joshua 14:10

"'And now, behold, the Lord has kept me alive, as He said, these forty-five years, ever since the Lord spoke this word to Moses while Israel wandered in the wilderness; and now, here I am this day, eighty-five years old.'"

(God promised something to Caleb a long time ago... and then fulfilled it through Joshua. Even if it's not as we think it would happen, or it takes a lifetime, God will deliver on His promises.)