We read in the book of Isaiah these words "Prepare ye the way of the Lord. Make straight His paths".
Then in the book of Mark we read those words again attributed to John the Baptist as the forerunner of the Messiah, Jesus Christ.
Unlike Elijah, John the Baptist did not do any miracles, yet scripture recognises that John the Baptist preached in the spirit and power of Elijah.
What was his message?
Mark 1:4 He "preach the baptism of repentance for the remission of sins."
He preached of One coming whose shoes he was not worthy to untie. (see Mark 1:7)
He preached that the coming Messiah would baptize with the Holy Spirit. (see Mark 1:8)
It was a message of repentance, like that of Elijah on Mt Carmel.
It was to urge so-called people of God to return to the Living Lord God.
And so the end time Elijah message
is a call to spiritual Israel to repentance.
It's a call to return to primitive godliness and dependance upon Christ for salvation.
It's a call to pray for and accept the outpouring of the holy Spirit in our lives.
Elijah prayed for physical rain and it came down in torrents.
In the endtime there is a drought as well, we must pray for the latter rain -- the outpouring of the Holy Spirit.
in many ways -- it is similar to the Laodicean message.
A message to God's luke warm people
to repent,
to accept Christ's gifts for righteousness
to open the door and let Jesus fill our lives
and overcome in His power.