'House of God' in the Bible

These things I [vividly] remember as I pour out my soul;How I used to go along before the great crowd of people and lead them in procession to the house of God [like a choirmaster before his singers, timing the steps to the music and the chant of the song],With the voice of joy and thanksgiving, a great crowd keeping a festival.

But as for me, I am like a green olive tree in the house of God;I trust [confidently] in the lovingkindness of God forever and ever.

We who had sweet fellowship together,Who walked to the house of God in company.