The world is full of Zacchaeuses: people not so much small of stature (Lk 19:3) as small of heart. We are surrounded by petty, mean-spirited, little people. We are sometimes that way ourselves. We need to see Jesus to become big-hearted, great-souled men and women of God.
Like Zacchaeus, we need a tree to climb so we can see Jesus. We are too petty to see over the crowd of faithlessness and selfishness obstructing our view of Jesus. We need a tree by which we rise above our sinful littleness.
The poet, Joyce Kilmer, wrote: "Only God can make a tree." By God's grace, many small Zacchaeuses have seen Jesus and become tall trees. These former Zacchaeuses help the present ones become new trees for future Zacchaeuses to climb.
A tree was part of the first sin. Jesus was crucified and died on a tree (Acts 13:29) to take away our sin. Jesus was lifted up on the tree of the cross so that we might be lifted up (see Jn 3:14; 12:32), see Him Whom we have pierced (Jn 19:37), and become life-giving trees (see Ps 1:3) in a "culture of death."
Climb a tree. See Jesus. Be a tree.