# that day with these words

"that day, saying"

# The people of Israel will pronounce blessings by your names saying

"The people of Israel will speak your names when they are blessing others"

# by your names saying, 'May God make you like Ephraim and like Manasseh'

"by your names. They will ask God to make others like Ephraim and like Manasseh" 

# Israel put Ephraim before Manasseh

Giving Ephraim the greater blessing and making him more important than Manasseh is spoken of as if Israel physically put Ephraim in front of Manasseh.