Rashi on Psalms
The seed that worships Him The seed of Israel, who constantly worship Him.
Radak on Psalms
A seed shall serve Him: – Still there is a seed that shall serve Him – that is, the seed of Israel, who serve Him continually.
Rashi on Psalms
it shall be told to the generation concerning the Lord Transpose the verse and explain it thus: It shall be told to the last generation in the name of the Lord and in His praise what He did for that seed.