'Mountain' in the Bible

Every valley will be filled,and every mountain and hill will be made low;the crooked will become straight,the rough ways smooth,

During those days He went out to the mountain to pray and spent all night in prayer to God.

About eight days after these words, He took along Peter, John, and James and went up on the mountain to pray.

The next day, when they came down from the mountain, a large crowd met Him.