What scripture(s) tells us the 144,000 from the 12 tribes of Israel are going to be preaching the Gospel?

 

My NKJV says:  Revelation 14:4 These are the ones who were not defiled with women, for they are virgins. These are the ones who follow the Lamb wherever He goes. These were redeemed[a] from among men, being firstfruits to God and to the Lamb.