True disciples follow Jesus Christ, and not some human ideology (like dispensationalism, a theology that was created in 1800s by some Jewish converts to Christianity who wanted to Judaize Christianity like the Judaizers of the Book of Galatians).
The Gospels clearly shows Jesus Christ attacking Jerusalem and the Jerusalem Temple. Jesus Christ clearly attacks Jewish religious and political leaders and Judaism as a religion. This is the Gospel Truth.
If so-called evangelical preacher want to hold onto human ideology (like Dispensationalism that was created less than 200 years ago) and reject the Gospel itself, then that preacher must NOT be seen as a servant of Jesus Christ. Servants of Jesus Christ follow the Gospel Truth.
If the so-called evangelical leader refuses to reject human ideology (Dispensationalism that was created less than 200 years ago), then we understand that the Holy Spirit has rejected him. Only the Holy Spirit can guide those whom He wants into understanding and truth. Holy Spirit rejected Jewish religious leaders and Judaism in Jesus Christ’s time, and that was why Jerusalem Temple priests wanted to kill Jesus Christ.
It is only by the Grace of God that we see the Truth.
When so-called evangelical leaders refuse to reject Jerusalem as Jesus Christ did and St. Paul did, then these so-called evangelical leaders should be treated like King Saul, who was originally anointed by God, but then later rejected by God.
This is how you know who the true servants of Jesus Christ is.