I wrote here about the importance of the words that come from our mouths.
As a further thought on this important subject, I remember hearing it related how in The City in the 1960’s if a deal was “shaken-on” then that was it. The meaning being that if you verbally agreed certain terms then they would be kept to. There was no withdrawing even if it proved to be disadvantageous, to either party down the line.
Alas, it was observed that things were no longer so. Now if people discover down the line that it was a bad deal for them they are now happy to pull out regardless of the commitment they have made. Your word is no longer your bond.
Generalities are obviously being spoken of here. But it is indicative of a change of moral atmosphere. For the Christian though the pattern is set in Psalm 15b. He is one who keeps an oath even when it hurts, and does not change their mind. We are people of our word.