Importance of good word

وَهُدُوٓا۟ إِلَى ٱلطَّيِّبِ مِنَ ٱلْقَوْلِ وَهُدُوٓا۟ إِلَىٰ صِرَٰطِ ٱلْحَمِيدِ

For they have been guided (in this life) to the purest of speeches; they have been guided to the Path of Him Who is Worthy of (all) Praise.

مَن كَانَ يُرِيدُ ٱلْعِزَّةَ فَلِلَّهِ ٱلْعِزَّةُ جَمِيعًا ۚ إِلَيْهِ يَصْعَدُ ٱلْكَلِمُ ٱلطَّيِّبُ وَٱلْعَمَلُ ٱلصَّٰلِحُ يَرْفَعُهُۥ ۚ وَٱلَّذِينَ يَمْكُرُونَ ٱلسَّيِّـَٔاتِ لَهُمْ عَذَابٌۭ شَدِيدٌۭ ۖ وَمَكْرُ أُو۟لَٰٓئِكَ هُوَ يَبُورُ

If any do seek for glory and power,- to Allah belong all glory and power. To Him mount up (all) Words of Purity: It is He Who exalts each Deed of Righteousness. Those that lay Plots of Evil,- for them is a Penalty terrible; and the plotting of such will be void (of result).