Genesis 8: 11: And the dove came in to him in the evening; and, lo, in her mouth was an olive leaf pluckt off: so Noah knew that the waters were abated from off the earth.
The dove brought back information about the new world in the form of the olive leaf; this information was given to the prophet Noah, and he shared the intelligence with his family.
The Holy Spirit is the dove which allowed Brother Branham to look beyond the Curtain of Time, to see another world and to share what he saw with the Bride of Christ.
The dove was released three times from the Ark.
The dove found no rest when she was first released, thus she returned to the Ark. Genesis 6: 3: And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an hundred and twenty years. The antediluvian world fell into the depths of sin, insomuch that it grieved God’s Holy Spirit, and so He withdrew His presence from the earth (after Noah and his family were inside the Ark) and destroyed the earth via the Great Flood.
The dove returned with an olive leaf when she was released the second time. Jesus came from Heaven to earth; His Holy Spirit indwelt the Church at Pentecost (Acts 2: 1 - 4) after His death, burial, resurrection and ascension. As the dove returned to the Ark with an olive leaf, so likewise did Jesus ascend to the Father with glad tidings of His purchasing work of redemption.
The dove did not return to the Ark after it was released the third time, thus Noah exited the Ark and joined the dove in the new world. This represents Christ returning with His family to the earth (Revelation 19), to live upon the earth during the Millennium and for all Eternity.