Hebrews 13:8-9 reads, “Jesus Christ is the same yesterday and today and forever. Do not be led away by diverse and strange teachings…”
Why did he write this to these Christians? Because there were plenty of other teachings and doctrines being taught by men that were not the one true Gospel that Jesus sent His apostles to spread throughout the world. As Paul said in Ephesians 4, there is one God, one Lord, one baptism, one hope, one calling, etc. The Jesus we are to follow is the one we read of in the New Testament. He does not change. His doctrine, teaching, and commandments do not change. He is the same Jesus yesterday, today, and forever.
We have to be faithful to His teaching. To His sacrifice. To His example. As Paul also said in Galatians 1, if anyone teaches anything different from the Gospel we find in the New Testament then we are not to follow that. Even if Paul or an angel came and taught anything different it wouldn’t be right. Jesus is the same. Always. The Gospel doesn’t change. It has no need to be “updated” or fixed.
If anyone teaches or practices anything that does not match up with what we can read in the New Testament then it is wrong. Error. False doctrine. We cannot follow anything different from the truth of what has been plainly given to us.
Are you following the same Jesus that we read of in the New Testament? Am I part of His one true church that I can read of in the New Testament? Are we obeying in faith the teachings we find in the New Testament? Have we obeyed the plan of salvation given by Jesus and not one that man has made up? Follow Jesus faithfully. His way. Not your own way. Not my way. Not anyone else’s way. Jesus. The same Jesus. Always and forever.