Handling Different Interpretations of the Bible

The last couple weeks, at our church in tempe, our pastor has been teaching about Jesus' parable of the unjust steward, which is found in Luke 16:1-13. If you haven't read it, the following info. might not make a ton of sense. I have never completely understood the passage and was looking forward to hearing another interpretation. The messages he gave made some interesting points, but, on the whole, I disagreed with several of his assertions about Jesus' meaning, so the points he derived from the text are also difficult to swallow. Basically, he said that "make friends for yourselves by means of unrighteous money, so that, when it fails, they will welcome you into everlasting abodes" means that we're to strenghten our "salvation friendship with God" through the wise stewardship of our time and money. In order for this interpretation to stand, the "friends" and "they" are the Trinity, since God alone is able to welcome someone into an eternal abode. Hmmmm. I need prayer and wisdom before I open my mouth.