We humans invest. We invest our time, energy, and money in projects, people, and plans for profit. We’re looking to get all kinds of things back from those investments, but most of us end up making a mix of good and bad investments along the way. Sometimes it’s hard to tell how they’re going to turn out.
Lots of people invested in Jesus while he was on earth. For some of them, it was the investment of time in trying to go hear him, or just see him pass by—Zaccheus started out like that, even though he ended up much more heavily invested by the time the story was over. Some were invested in things Jesus was opposing—the religious and political elites of Jerusalem were heavily invested in the temple, and no doubt felt that investment was threatened by the way Jesus talked about the temple and acted when he came to visit it. Others were invested in different ways: Peter talked about having left everything behind to follow Jesus, and one time Jesus told him he was going to end up with a pretty good return on that investment.
But I don’t know if anybody was more invested in Jesus than John the Baptist. It seems like John could have had pretty good life following the priestly calling that he was in line for. But instead he spent most of his life in the wilderness—Luke tells us that he was living there even before he started preaching (1:80), and if anything the Bible says about John is to be believed, it was anything but a plush, cushy lifestyle. Jesus says as much here in Matthew 11—John lived the prophet’s lifestyle in the desert, far from the fine robes people would have found if they had gone looking in the palaces. He was out in the wilderness, living a life of denial, decked out in rough looking clothes, eating locusts and wild honey, and all of it was investment in the kingdom of God.