In Horsley's book, he notes a passage in the Gospel of Mark where Jesus rebukes the religious leaders for telling people to donate their money to the church rather than care for their family members with financial need.

“You skillfully sidestep God’s law in order to hold on to your own tradition… But you say it is all right for people to say to their parents, ‘Sorry, I can’t help you. For I have vowed to give to God what I would have given to you.’ In this way, you let them disregard their needy parents. And so you cancel the word of God in order to hand down your own tradition.” (Mark 7, NLT. Emphasis added)

It strikes me that I never heard this preached in all my time in the church. Instead, we were taught to give to the church before all other needs. I'm not going to flat out suggest that this passage was actively ignored, but it isn't lost on me that for all the sermons on tithing I sat through, this never once came up.