What Will be our Language in Heaven? (Q&A)

Q:  Someone in our small group asked this question when we were going through Revelation, “What will be our language in heaven?” referencing Revelation 7:9-10:

“After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands, and crying out with a loud voice, ‘Salvation belongs to our God who sits on the throne, and to the Lamb!’” (ESV)

Will it be that we will be worshiping and singing to the Lord in our own language? And will we be communicating with our own languages yet understanding each other and never needing any translation? (I’m thinking of 1 Corinthians 13:12 on this.)

Could you enlighten me please? I want to know your thoughts. —Jean R.