Hello, it is very interesting that you have asked this question because I can recognize a sign that helps identify the Messiah at the Second Coming, John 4:25. When Jesus Christ set up the preaching work for his apostles and disciples, he sent them out in two or with two people working together, Mark 6:7-13. The reason for this is so that the two people can strengthen and support each other in their ministry, 1 Samuel 23:16 and Acts 13:2.
In the Bible book of Revelation, the two witnesses of chapter 11:1-14 complete their witness along with tests that grants them God's approval, this is called the second woe. What information does the Bible provide that expresses the two witnesses of the Bible?
Psalm 147:1-2
Living Bible
147 Hallelujah! Yes, praise the Lord! How good it is to sing his praises! How delightful, and how right!
2 He is rebuilding Jerusalem and bringing back the exiles.