If the dreamer in a dream welcome, he accepts himself and begins to like himself. If he reveice welcome from family member, now he is accepted by the family and his relations will improve.
To welcome another person in the house means, that the dreamer learns to trust himself. If dreamer belong to a welcoming party, it shows his ability, to belong for a social group with common beliefs.
Dreaming of the welcome on spiritual level means, that the dreamer is accepted spiritual, and his first steps to spiritual fulfillment are greeted.