# He said, "I will certainly return to you

The word "He" refers to the man whom Abraham called "Lord" in Genesis 18:3.

# in the springtime

"when this same season comes next year" or "about this time next year"

# see

The word "see" here alerts us to pay attention to the surprising information that follows.

# in the tent doorway

"at the opening of the tent" or "at the entrance of the tent"