The Muslim ummah will also testify against other ummahs in respect to their saying that their prophets did not convey the message to them

Prophet s.a.w will either testify for us or against us whether we obeyed him or not

Its our responsibility as muslims to convey the message of Allah to other people.

Wajh is the plural of wujooh and the root words are و ج ه

The change in Qibla to the Qibla of ibraheem a.s. implied that religion should be restored to the religion of Ibraheem a.s. and this was a test for the people of the book.

We can make a guess of where the Qibla is before we perform our Salah.