The same yesterday, today, forever

The same yesterday today forever
The writer of Hebrews tells us,

“Jesus Christ is the same yesterday and today and forever. 

Do not be carried away by all kinds of strange teachings....”

Hebrews 13: 8,9a.  

The writer here makes it clear that Jesus is eternal and unchanging. That believers in Christ should not get carried away with false teaching.
Previously writer of Hebrews tells us exactly who Jesus is and what he has done for mankind. The writer states,
“In the past God spoke to our forefathers through the prophets at many times and in various ways, but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom he made the universe.  
The Son is the radiance of God’s glory and the exact representation of his being, sustaining all things by his powerful word. After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven.” Hebrews 1:1-3.
In a nutshell this is what Christians believe of Jesus,
1/ Jesus is God’s Son.
2/ The universe was made through Jesus.
3/ Jesus “...is the radiance of God’s glory and the exact representation of his being.”
4/ Jesus is God incarnate. God in the Flesh.
5/ Jesus provided purification for our sins.
These facts never change. One cannot believe anything other than this and still be a Christian.
Please think about it.