Knowing that We Died with Christ By Revelation

This is Watchman Nee's testimony on how he knew that he had died with Christ:-

"I remember one morning -- how can I forget it! -- that I was sitting upstairs reading Romans and came to the words: 'knowing this, that our old man was crucified with Him, that the body of sin might be done away, that so we should no longer be in bondage to sin.' Knowing this! How could I know it? I prayed, 'LORD, open my eyes!';  and then, in a flash, I saw. I had earlier been been reading 1 Corinthians 1:30: 'ye [are[ in Christ Jesus.' I now turned to that passage and looked at it again: 'of him [God] are ye in Christ ...' The fact that you are in Christ Jesus is God's doing! It was amazing! So then, if Christ died, and that is a certain fact, and if God put me into Him, then I must have died too. All at once I saw my oneness with Christ -- that I was in Him and that when He died I died. My death to sin was matter of the past and not of the future. It was a Divine fact that had dawned upon me.

...From that day to this I have never for one moment doubted the finality of that word in Galatians 2:20: 'I have been crucified with Christ; and it is no longer I that live, but Christ liveth in me.' "

(Source: page 18, The Finest of the Wheat (Volume One) -- Selected Excerpts from the Published Works of Watchman Nee)