Verse 1
Title. A Song of degrees. Same as 120. See App-67.
Blessed is = O the happinesses of. See the Beatitudes. App-63.
feareth = revereth.
Verse 2
labour. Put by Figure of speech Metonymy (of Cause), App-6, for that which is produced by labour.
thine hands: i.e. thine own hands, in contrast with the opposite (Leviticus 26:16. Deuteronomy 28:30-33, Deuteronomy 28:39, Deuteronomy 28:40). See also Amos 5:11. Micah 6:15.
Verse 3
wife . . . fruitful. The reference is, as in Psalm 127 to the fact that Hezekiah was childless at this time and ionged for an heir. App-67.
children = sons.
Verse 4
Behold. Figure of speech Asterismos. App-6.
man = a strong man (plural) Hebrew. geber. App-14.
blessed. Not the same word as in Psalms 128:1. That is happy (Beatitudo); this is blessed (Benedictio).
Verse 5
And thou shalt see: or, That thou mayest see.
Verse 6
thou shalt see. Hezekiah did see.
peace. Because this Psalm concludes a group.