The walls of Jerusalem have layer upon layer of repair work, replacing older stones that were destroyed by enemies. You can see the differences in shading and texture of the stone blocks. In the photo below, you can also see a mustard tree right behind the tall date palm tree. Note how much bigger it is than the people next to it.
“The kingdom of heaven is like a mustard seed, which a man took and planted in his field. Though it is the smallest of all your seeds, yet when it grows, it is the largest of garden plants and becomes a tree, so that the birds of the air come and perch in its branches.” (Matt. 13:31-32)
Oh my Jesus, be the gardener of my life! Nourish the seed of heaven that You have already placed within me and make it grow so that Your love, Your ways, Your kingdom will grow within me. Amen!