'Holy' in the Bible

We heard this voice come out of heaven when we were with him on the holy mountain.

For no prophecy ever came by the will of man: but holy men of God spoke, being moved by the Holy Spirit.

For it would be better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered to them.

that you should remember the words which were spoken before by the holy prophets, and the commandments of us, the apostles of the Lord and Savior:

Therefore since all these things will be destroyed like this, what kind of people ought you to be in holy living and godliness,