In Brazil missionaries found that instead of knocking on doors, they usually needed to clap their hands at the front gate in order to summon the householder.
Saidu Juanah, an elder and a pioneer in the Bo West Congregation, relates: “One sister told me, ‘If I hear that we will receive a new Kingdom Hall, I will clap with my hands and feet!’
21 “The mountains and the hills themselves will become cheerful before you with a joyful outcry, and the very trees of the field will all clap their hands.
When pausing to admire such handiwork, we may sense that ‘the trees of the field are all clapping their hands’ as they give silent praise to their Maker.—Isaiah 55:12; Psalm 148:7-9.
So I did and stood amazed every week when these brilliant, grown-up poets laughed with me and groaned their sympathy and clapped and told me, "Hey, I really felt that too."