Study meaning: let them worship the Lord of this House,
The response to the blessing is to worship the Lord of the House. The House refers to the Ka‘bah. Worship is directed to Allah, not to the building. Notice rabba and the ‘ayn in ya‘budu, and keep the meaning connected to the blessings on either side.
Return to ayahs 1-2, then add this ayah. If a phrase is difficult, practise less material and return later. A parent can listen and encourage without asking the learner to compete.
Read the Quran passage and Ibn Kathir commentary. Study meanings are simplified; the commentary provides the wider explanation.