Thank you, Nancy for this research. This tells me that the Great Crowd, are in fact approved, sealed chosen anointed ones in Christ – the remnant, and Great not necessarily in number since "no man can number", but in power. Zech 4:6 They complete the Holy City as the capstone of Zech 4:7. I don’t think it could be anyone other than the priesthood, since Hebrews 8:5 brings out:
"They serve at a sanctuary that is a copy and shadow of what is in heaven. This is why Moses was warned when he was about to build the tabernacle: ‘See to it that you make everything according to the pattern shown you on the mountain.’ "
1 Pet 2:5; 2 Cor 5:1; Eph 2:21; Rev 7:9,10,13-17
Only anointed priests were to serve in God’s temple of the past. Ezek 44:7
This would definitely mean that when Christ said I have other sheep that are not of this fold, he was extending the anointed priesthood to the physical Gentiles. The wonderful thing I realize is with the fulfillment of this New Covenant, the Bride of Christ, life is brought to all faithful mankind. Isa Chapter 65
Rom 8:19-22 “For the earnest expectation of the creation eagerly waits for the revealing of the sons of God. For the creation was subjected to futility, not willingly, but because of Him who subjected it in hope; because the creation itself also will be delivered from the bondage of corruption into the glorious liberty of the children of God. For we know that the whole creation groans and labors with birth pangs together until now.”