There is in general good reason to suppose that in several respects the gods could all benefit from instruction by us human beings. We humans are - more humane.
It is our duty not to not only hold fast, but to hold forth the Word of life; not only to hold fast for our own benefit, but to hold it forth for the benefit of others, to hold it forth as the candlestick holds forth the candle, which makes it appear to advantage all around, or as the luminaries of the heavens, which shed their influences far and wide.
How do you know if the next act you are about to do is the right one or the wrong one? Consider the face of the poorest and most vulnerable human being that you have ever chanced upon, and ask yourself if the act that you contemplate will be of benefit to that person; and if it will be, it's the right thing to do, and if not, rethink it.
We human beings are social beings. We come into the world as the result of others’ actions. We survive here in dependence on others. Whether we like it or not, there is hardly a moment of our lives when we do not benefit from others’ activities. For this reason, it is hardly surprising that most of our happiness arises in the context of our relationships with others.
When we cast our bread upon the waters we can presume that someone downstream whose face we will never know will benefit from our action, as we who are downstream from another will profit from the grantor's gift.