Isaiah 6:1, 5 KJV
In the year that king Uzziah died I saw also the Lord sitting upon a throne, high and lifted up, and his train filled the temple.
 Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, the Lord of hosts.
Isaiah saw the Lord the Lord sitting on his throne in a vision, and his first words were “woe is me!!”
Indeed, Isaiah is not the only prophet to make such a remark. Others like Daniel and Jeremiah became conscious of their own frailties when they caught a glimpse of His glory.
I just read in Revelation 1:17, John fell flat as if he was dead when he saw the Lord, in his vision on the island of Patmos. God’s holiness and righteousness is made manifest immediately to the inner spirits of those who get to see Him, and instantly they become aware/conscious of their spiritual statuses and know how unworthy they are to even hear His voice.
I haven’t seen the Lord yet in a vision, but one thing I know for sure is that before I meet Him in person, I’d be transformed into an incorruptible state and behold His glory in majesty, and cry out Holy, Holy, Holy is the LORD. Don’t miss the opportunity to do same.
Have a blessed Friday.