Verses with the word plainly in the New Testament (5 verses):

John 10:24
Then came the Jews round about him, and said unto him, How long dost thou make us to doubt? If thou be the Christ, tell us plainly.

John 11:14
Then said Jesus unto them plainly, Lazarus is dead.

John 16:25
These things have I spoken unto you in proverbs: but the time cometh, when I shall no more speak unto you in proverbs, but I shall shew you plainly of the Father.

John 16:29
His disciples said unto him, Lo, now speakest thou plainly, and speakest no proverb.

Hebrews 11:14
For they that say such things declare plainly that they seek a country.