Sacred Name Movement
The Sacred Name movement appears from time to time. Their basic doctrine is that the words "Jesus" and "Jehovah" are corruptions of the true names of "Yeshua" and "Yahweh". Their teaching would be that if you are a good Christian you would use only the real Hebrew names and not their pagan counterparts. Some of the extreme in their ranks actually state that God will not answer your prayers if you pray using the English names after being told of this.
In reality the Hebrew name Yeshua would be translated Joshua in English and in to Greek as Hesus. When Hesus is translated in to English it becomes Jesus.
This teaching can be easily proven false by looking at Scriptures like 2 Samuel 5:20. This is were David captures a Philistine city and renames it Baal Perazim, to acknowledge the fact that God helped him capture it. Baal Perazim means The LORD that breaks through. Yahweh is the name used exclusively for the God of the Hebrews. Baal is usually refers to the Canaanite God. It goes on to sate the LORD was pleased at the name. For it brought Him glory.
The Sacred Name people have never proven that the names Jesus and Jehovah are pagan or anything other than the differences in translating a word from one language to another. If God did not mind David referring Him as Baal, why would He mind if we pray in the name of Jesus or Jehovah?
It seems these people are doing nothing but dividing the body of Christ over a non-issue, which is forbidden in 1 Corinthians 1 and 3