An object in dreams can often give angibility to spiritual concepts.
A cross, for instance, will suggests sacrifice to some, conviction to others and refusal to even more.
To object to something suggests that we cannot accept information given at this time.
Psychological / emotional perspective: To object to or disagree with a statement or idea in dreams suggests that we may have already formed an opinion in waking life or that the statement opposes our own code of conduct. From an emotional perspective we cannot make a commitment.
Material aspects: Often in waking life we are unable to speak out against an injustice or a wrong move. Our dreams will often give us the opportunity to object or protest against such things.