Tell/Don't Tell - Mark 5

Mar_5:19  Howbeit Jesus suffered him not, but saith unto him, Go home to thy friends, and tell (G312) them how great things the Lord hath done for thee, and hath had compassion on thee.

Mar_7:36  And he charged them that they should tell (G2036) no man: but the more he charged them, so much the more a great deal they published it;

Mar_8:26  And he sent him away to his house, saying, Neither go into the town, nor tell (G2036) it to any in the town.

Mar_8:30  And he charged them that they should tell (G3004) no man of him.

Mar_9:9  And as they came down from the mountain, he charged them that they should tell (G1334) no man what things they had seen, till the Son of man were risen from the dead.

I was intrigued by Jesus' telling one man to publish what had happened to him, versus the other instances of 'shhh' keep it quiet.

tell - G312 - From G303 and the base of G32; to announce (in detail).

• G303 - A primary preposition and adverb; properly up; but (by extension) used (distributively) severally, or (locally) at (etc.).
• G32 - From ἀγγέλλω aggellō (probably derived from G71; compare G34; to bring tidings); a messenger; especially an “angel”; by implication a pastor.

Well, I hadn't looked at the other verses to see if 'tell' was the same, and they aren't.  Interesting.

G2036 - A primary verb (used only in the definite past tense, the others being borrowed from G2046, G4483 and G5346); to speak or say (by word or writting).

G3004 - A primary verb; properly to “lay” forth, that is, (figuratively) relate (in words [usually of systematic or set discourse; whereas G2036 and G5346 generally refer to an individual expression or speech respectively; while G4483 is properly to break silence merely, and G2980 means an extended or random harangue]).

G1334 - From G1223 and G2233; to relate fully.

• G1223 - A primary preposition denoting the channel of an act; through (in very wide applications, local, causal or occasional). In composition it retains the same general import.
• G2233 - Middle voice of a (presumed) strengthened form of G71; to lead, that is, command (with official authority); figuratively to deem, that is, consider.

I still don't 'get' why, especially in Mark 5:9 - go tell what great things the Lord has done, while in 7:36 and 8:26 don't.  I can somewhat understand with the transfiguration, because it's more of a wait, versus an all out DON'T.

It does make me ponder on what the Lord does and does not want me to 'tell'.  Am I even seeking Him before I let loose with what's on my mind?  Is what I'm telling glorify Him?  Thinking before speaking...how much conflict and hurt could be avoided?