Asher symbolizes being fruitful. Gad is a fruitful area. In like wise Christians should be fruitful of Spiritual gifts. Name means hire or wages or there is reward. Moses statement could mean they were used for labor.
Name means dwelling.
Leah hoped that Jacob would dwell with her. Zebulun's land went to the sea after winning several wars. Most of Jesus disciples could of been from these two tribes. When Nebuchadnezzar won over a land he replace many people in the land. Name means he shall add.