Shared ground
Psalm 127:5 closes with a beatitude: a person is called “happy/blessed” because his “quiver” is full of “them,” meaning the children described in the prior lines (Psalm 127:3–4). The image treats children as resources like arrows—support that can be drawn on when pressure comes.
The verse ties that household gift to a public outcome. The promised result is “not being put to shame” when there is a confrontation with “enemies” at “the gate.” In the psalm’s world, the gate was where disputes, reputation, and civic decisions were handled, so the setting is social and legal as much as personal.
Where interpretation differs
A main question is who “they” are in “they won’t be put to shame.” Some read “they” as the children: the children themselves won’t be shamed when they contend in public. Others read “they” as the parents (or the family as a unit): the man with many children won’t be shamed because his household stands with him.
A second question is what “speak with their enemies in the gate” refers to. Some take it fairly narrowly: arguing a case, answering accusations, or negotiating against rivals in a public forum. Others take it more broadly: any public contest over status where opponents try to disgrace someone.
A third question is how literal “quiver full” is. Some treat it as a fairly direct statement about having many children; others see “full” as poetic language for strength and sufficiency rather than a count.
Why the disagreement exists
The language is compressed and poetic. Pronouns can shift in Hebrew poetry, so “they” can plausibly point to more than one group. Also, “gate” is a real place with legal functions, but it can also stand for public life in general. Finally, “full” is a vivid metaphor that can be heard as either numeric abundance or a general picture of being well-supplied.
What this passage clearly contributes
Explicitly, the text says (1) having many children is pictured as a blessing, (2) children are compared to arrows filling a quiver, and (3) this family strength is connected to public honor—being able to face opponents at the gate without disgrace. As a theological inference consistent with the psalm’s flow, the verse presents family life as one arena where God’s provision can translate into stability and credibility in the community, not just private happiness (Psalm 127:1).